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Observations and Measurements - XML Implementation (version 2.0) — OGC 10-025r1

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OGC 10-025r1

Open Geospatial Consortium Date: 2011-03-22 Reference number of this OGC® project document: OGC name of this OGC® project document:

OGC 10-025r1

http://www.opengis.net/doc/IS/OMXML/2.0 Version: 2.0 Category: OGC® Implementation Editor: Simon Cox

Warning This document is an OGC Member approved international standard. This document is available on a royalty free, non-discriminatory basis. Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.

Document type: Document subtype: Document stage: Document language:

OpenGIS® Implementation standard Encoding Approved English

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OGC 10-025r1

Contents i.

Abstract .................................................................................................................. v

ii.

Keywords ............................................................................................................... v

iii.

Preface .................................................................................................................... v

iv.

Submitting organizations .................................................................................... vi

Submission contact points ................................................................................... vi

vi.

Changes to the OGC® Abstract Specification ................................................... vi

vii.

Future work ......................................................................................................... vii

Foreword ......................................................................................................................... viii Introduction ...................................................................................................................... ix 1

Scope....................................................................................................................... 1

2 2.1 2.2 2.3

Conformance ......................................................................................................... 1 Overview ................................................................................................................ 1 Specification identifier .......................................................................................... 1 Conformance classes related to Observations and Measurements instances ................................................................................................................. 2

Normative references ............................................................................................ 4

Terms and definitions ........................................................................................... 5

5 5.1 5.2 5.3

Conventions ........................................................................................................... 7 Abbreviated terms ................................................................................................ 7 Schema language ................................................................................................... 7 Document presentation of the specification ........................................................ 7

6 6.1 6.2 6.3 6.4

XML Schema for Observations and Sampling Features................................... 8 Introduction ........................................................................................................... 8 XML Schema Packaging ...................................................................................... 8 XML elements ....................................................................................................... 9 Conformance with O&M model .......................................................................... 9

7 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8

Requirements for XML instances of Observations and Measurements ........ 15 Introduction ......................................................................................................... 15 Virtual typing strategy ....................................................................................... 15 Requirements class: Generic observation data ................................................ 17 Requirements class: Measurement data ........................................................... 17 Requirements class: Category observation data .............................................. 18 Requirements class: Count observation data ................................................... 18 Requirements class: Truth observation data ................................................... 19 Requirements class: Geometry observation data............................................. 19

OGC 10-025r1

7.9 7.10 7.11 7.12 7.13 7.14 7.15 7.16 7.17 7.18 7.19 7.20

Requirements class: Temporal observation data ............................................. 20 Requirements class: Complex observation data .............................................. 20 Requirements class: SWE scalar observation data.......................................... 21 Requirements class: SWE array observation data .......................................... 22 Requirements class: Spatial observation data .................................................. 22 Requirements class: Sampling feature data ..................................................... 23 Requirements class: Spatial sampling feature data ......................................... 24 Requirements class: Sampling point data......................................................... 24 Requirements class: Sampling curve data ........................................................ 25 Requirements class: Sampling surface data ..................................................... 25 Requirements class: Sampling solid data ......................................................... 26 Requirements class: Specimen data .................................................................. 26

Media types for Observations and Measurements data .................................. 28

Annex A Abstract test suite (normative) .............................................................. 29 A.1 Conformance class: Generic observation data ................................................. 29 A.2 Conformance class: Measurement data ............................................................ 30 A.3 Conformance class: Category observation data............................................... 31 A.4 Conformance class: Count observation data .................................................... 31 A.5 Conformance class: Truth observation data .................................................... 32 A.6 Conformance class: Geometry observation data ............................................. 32 A.7 Conformance class: Temporal observation data ............................................. 33 A.8 Conformance class: Complex observation data ............................................... 33 A.9 Conformance class: SWE scalar observation data .......................................... 34 A.10 Conformance class: SWE array observation data ........................................... 35 A.11 Conformance class: Spatial observation data .................................................. 35 A.12 Conformance class: Sampling feature data ...................................................... 36 A.13 Conformance class: Spatial Sampling feature data ......................................... 37 A.14 Conformance class: Sampling point data ......................................................... 38 A.15 Conformance class: Sampling curve data......................................................... 39 A.16 Conformance class: Sampling surface data ...................................................... 39 A.17 Conformance class: Sampling solid data .......................................................... 40 A.18 Conformance class: Specimen data ................................................................... 40 Annex B XML Schema implementation (informative) ....................................... 42 B.1 GML Application Schema .................................................................................. 42 B.2 Encoding rule ...................................................................................................... 42 B.2.1 Variations from standard GML encoding rule ................................................ 42 B.2.2 Virtual sub-typing of specialized classes ........................................................... 43 B.2.3 Global property elements ................................................................................... 44 Annex C Example OMXML documents (informative) ....................................... 46 C.1 Introduction ......................................................................................................... 46 C.2 Observation data ................................................................................................. 46 C.2.1 A scalar observation whose result is a Measure ............................................... 46 C.2.2 A scalar observation whose result is a classification or category ................... 47 C.2.3 An observation whose result is provided out-of-band ..................................... 47 C.2.4 Observation with complex result ....................................................................... 48 C.2.5 Observation with complex result –SWE TextBlock encoding ........................ 50 Copyright © 2011 Open Geospatial Consortium.

iii

OGC 10-025r1

C.2.6 C.2.7 C.3 C.3.1 C.3.2 C.3.3 C.3.4 C.4

Observation with complex result – alternative schema for result .................. 51 Observation with spatial location indicated in a parameter ........................... 53 Spatial sampling features ................................................................................... 54 Sampling Point .................................................................................................... 54 Sampling Curve with metadata ......................................................................... 55 Sampling feature collection – sampling curve with association stations ....... 56 Sampling curve with embedded observations .................................................. 59 Specimens............................................................................................................. 64

Document revision history ............................................................................................. 66

OGC 10-025r1

Abstract

This standard specifies an XML implementation for the OGC and ISO Observations and Measurements (O&M) conceptual model (OGC Observations and Measurements v2.0 also published as ISO/DIS 19156), including a schema for Sampling Features. This encoding is an essential dependency for the OGC Sensor Observation Service (SOS) Interface Standard. More specifically, this standard defines XML schemas for observations, and for features involved in sampling when making observations. These provide document models for the exchange of information describing observation acts and their results, both within and between different scientific and technical communities.

ii.

Keywords

ogcdoc, o&m, observations, measurements, swe, iso_19156, sos, gml

iii.

Preface

The Observations and Measurements XML Implementation standard is part of the revision and refactoring of O&M for its publication in two parts (i) The conceptual model (in UML) is being published as ISO 19156 through ISO/TC 211, and jointly by OGC as a Topic 20 of the Abstract Specification. (ii) The XML implementation is being published by OGC as an independent document - in recognition of the fact that XML is only one of all the possible implementations for O&M - to decouple maintenance of the implementation from revision of the abstract model - to better reflect the scope of activities and publications appropriate to ISO and OGC.

OGC 10-025r1

iv.

Submitting organizations

The following organizations submitted this Implementation Specification to the Open Geospatial Consortium Inc. as an Implementation Specification. a) CSIRO Australia b) European Commission – Joint Research Centre c) International Geospatial Services Institute GmbH (iGSI) d) interactive instruments e) Science and Technology Facilities Council, NERC, UK f) IfGI - University of Muenster g) SpotImage h) Geoscience Australia

Submission contact points

All questions regarding this submission should be directed to the editor or the submitters: CONTACT

vi.

COMPANY

Simon Cox

European Commission – Joint Research Centre, CSIRO Australia

Andrew Woolf

STFC

Johannes Echterhoff

iGSI

Clemens Portele

interactive instruments

Alexandre Robin

SpotImage

Peter Taylor

CSIRO Australia

Chris Body

Geoscience Australia

Christoph Stasch

IfGI

Changes to the OGC® Abstract Specification

The OGC® Abstract Specification does not require changes to accommodate this OGC® standard. vi

OGC 10-025r1

vii.

Future work

Requirements and conformance classes for coverage observations will be defined when consensus has been reached and a standard published for a comprehensive OGC/GML encoding for coverages. This may be in a revision of this document, or in a separate specification.

vii

OGC 10-025r1

Foreword Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. Open Geospatial Consortium Inc. shall not be held responsible for identifying any or all such patent rights. However, to date, no such rights have been claimed or identified. Recipients of this document are requested to submit, with their comments, notification of any relevant patent claims or other intellectual property rights of which they may be aware that might be infringed by any implementation of the specification set forth in this document, and to provide supporting documentation.

viii

OGC 10-025r1

Introduction This Standard arises from work originally undertaken through the Open Geospatial Consortium’s Sensor Web Enablement (SWE) activity. SWE is concerned with establishing interfaces and protocols that will enable a “Sensor Web” through which applications and services will be able to access sensors of all types, and observations generated by them, over the Web. SWE has defined, prototyped and tested several components needed for a Sensor Web, namely: − Sensor Model Language (SensorML). − Observations & Measurements (O&M) − Sensor Observation Service (SOS). − Sensor Planning Service (SPS). The SWE Architecture is described in the OGC Sensor Web Enablement Architecture [OGC 06-021r4] Best Practice document.

OpenGIS® Encoding Standard

OGC 10-025r1

Observations and Measurements - XML Implementation

Scope

This Standard defines an XML implementation of schemas for observations, and for features involved in sampling when making observations. These provide document models for the exchange of information describing observation acts and their results, both within and between different scientific and technical communities. The implementation is derived from a conceptual model defined in OGC Observations and Measurements v2.0 (also published as ISO/DIS 19156), and follows the rules for GML Application Schemas described in OGC Geography Markup Language v3.2 (also published as ISO 19136:2007). 2

Conformance

2.1

Overview

This Standard defines an XML implementation of the conceptual models for describing observations and sampling features. The implementation is described using the XML Schema language and Schematron. Requirements for one standardization target type are considered: -

data instances, i.e. XML documents that encode observation data for exchange;

Since data producing applications should generate conformant data instances, the requirements and tests described in this standard also apply to this standardization target. NOTE: It is recognized that requirements and tests for a second standardization target type (data consuming applications, i.e. data processing software that accepts observation data as input) are also highly desirable. However, a general solution to specifying this target this is more challenging and has been deferred.

2.2

Specification identifier

All requirements-classes and conformance-classes described in this document are owned by the specification identified as http://www.opengis.net/spec/OMXML/2.0.

OGC 10-025r1

2.3

Conformance classes related to Observations and Measurements instances

The conformance rules are based on XML validation using the XML Schema representation of OMXML, together with processing of constraints expressed using Schematron assertions and reports. Annex A defines a set of tests and conformance classes that will support various applications with a range of different requirements. 18 conformance classes are distinguished.

OpenGIS® Encoding Standard

OGC 10-025r1

Table 1 — Conformance classes related Observations and Measurements instances Conformance class

Description

Clause

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Observation data

A.1

http://www.opengis.net/spec/OMXML/2.0/conf/measurement

Measurement data

A.2

http://www.opengis.net/spec/OMXML/2.0/conf/categoryObservation

Category observation data

A.3

http://www.opengis.net/spec/OMXML/2.0/conf/countObservation

Count observation data

A.4

http://www.opengis.net/spec/OMXML/2.0/conf/truthObservation

Truth observation data

A.5

http://www.opengis.net/spec/OMXML/2.0/conf/geometryObservation

Geometry observation data

A.6

http://www.opengis.net/spec/OMXML/2.0/conf/temporalObservation

Temporal observation data

A.7

http://www.opengis.net/spec/OMXML/2.0/conf/complexObservation

Complex observation data

A.8

http://www.opengis.net/spec/OMXML/2.0/conf/SWEScalarObservation

Observation data with result encoded as a SWE Common simple data component

A.9

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservation

Observation data with result encoded as a SWE Common block data component

A.10

http://www.opengis.net/spec/OMXML/2.0/conf/spatialObservation

Spatially keyed observation data

A.11

http://www.opengis.net/spec/OMXML/2.0/conf/sampling

Sampling feature data

A.12

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling

Spatial sampling feature data

A.13

http://www.opengis.net/spec/OMXML/2.0/conf/samplingPoint

Sampling point data

A.14

http://www.opengis.net/spec/OMXML/2.0/conf/samplingCurve

Sampling curve data

A.15

http://www.opengis.net/spec/OMXML/2.0/conf/samplingSurface

Sampling surface data

A.16

http://www.opengis.net/spec/OMXML/2.0/conf/samplingSolid

Sampling solid data

A.17

http://www.opengis.net/spec/OMXML/2.0/conf/specimen

Specimen data

A.18

OpenGIS® Encoding Standard

OGC 10-025r1

Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. Geographic information – metadata – XML implementation ISO/TS 19139:2007. urn:iso:TS:iso:19139 OGC Geography Markup Language v3.2 OGC Document 07-036 http://www.opengis.net/doc/IS/GML/3.2 (also published as ISO 19136:2007, Geographic information — Geography Markup Language) MIME Media Types for GML OGC Document 09-141r1 http://portal.opengeospatial.org/files/?artifact_id=37743 Namespaces in XML 1.0 (Third Edition) W3C Recommendation (8 December 2009) http://www.w3.org/TR/xml-names/ OGC Observations and Measurements v2.0 OGC Document 10-004r1 http://www.opengis.net/doc/AS/OM/2.0 (also published as ISO/DIS 19156:2010, Geographic information — Observations and Measurements) OGC Naming Authority (OGC-NA) Policies & Procedures OGC Document 09-046r2 http://www.opengis.net/doc/POL/OGC-NA/1.1 Policy Directives for Writing and Publishing OGC Standards: TC Decisions. OGC Document 06-135r9. http://www.opengis.net/doc/POL/Standards/2.0.3 Schematron: ISO/IEC 19757-3, Information technology — Document Schema Definition Languages (DSDL) — Part 3: Rule-based validation — Schematron http://standards.iso.org/ittf/PubliclyAvailableStandards/c040833_ISO_IEC_197573_2006(E).zip The Specification Model — A Standard for Modular specifications OGC Document 08131r3. http://www.opengis.net/doc/POL/MOD-SPEC/1.0 OGC SWE Common Data Model Encoding Standard v2.0 OGC Document 08-094r1 http://www.opengis.net/doc/IS/SWE/2.0 XML Schema Part 1: Structures Second Edition. W3C Recommendation (28 October 2004) http://www.w3.org/TR/xmlschema-1/ XML Schema Part 2: Datatypes Second Edition. W3C Recommendation (28 October 2004) http://www.w3.org/TR/xmlschema-2/

OGC 10-025r1

Terms and definitions

For the purposes of this document, the following terms and definitions apply. 4.1 all-components document XML schema document that includes, either directly or indirectly, all of the components defined and declared in a namespace [OGC Policy Directives. http://www.opengis.net/doc/POL/Standards/2.0.3] 4.2 application schema conceptual schema for data required by one or more applications [ISO 19101:2002, definition 4.2] 4.3 element <XML>

basic information item of an XML document containing child elements, attributes and character data [ISO 19136:2007] NOTE From the XML Information Set: ―Each XML document contains one or more elements, the boundaries of which are either delimited by start-tags and end-tags, or, for empty elements, by an empty-element tag. Each element has a type, identified by name, sometimes called its ‗generic identifier‘ (GI), and may have a set of attribute specifications. Each attribute specification has a name and a value.

4.4 GML application schema application schema written in XML Schema in accordance with the rules specified in ISO 19136:2007 [ISO 19136:2007] 4.5 GML document XML document with a root element that is one of the elements AbstractFeature, Dictionary or TopoComplex specified in the GML schema or any element of a substitution group of any of these elements [ISO 19136:2007] 4.6 GML schema schema components in the XML namespace ―http://www.opengis.net/gml/3.2 specified in ISO 19136:2007

OGC 10-025r1

4.7 measurement set of operations having the object of determining the value of a quantity [ISO/TS 19101-2:2008, definition 4.20] 4.8 observation act of observing a property NOTE

The goal of an observation may be to measure or otherwise determine the value of a property

[ISO/DIS 19156:2010] 4.9 observation result estimate of the value of a property determined through a known procedure [ISO/DIS 19156:2010] 4.10 sampling feature feature, such as a station, transect, section or specimen, which is involved in making observations concerning a domain feature NOTE A sampling feature is purely an artefact of the observational strategy, and has no significance independent of the observational campaign.

[ISO/DIS 19156:2010] 4.11 schema <XML Schema> collection of schema components within the same target namespace EXAMPLE Schema components of W3C XML Schema are types, elements, attributes, groups, etc.

[ISO 19136:2007] 4.12 schema document <XML Schema> XML document containing schema component definitions and declarations NOTE The W3C XML Schema provides an XML interchange format for schema information. A single schema document provides descriptions of components associated with a single XML namespace, but several documents may describe components in the same schema, i.e. the same target namespace.

[ISO 19136:2007]

OGC 10-025r1

Conventions

5.1

Abbreviated terms

GML

Geography Markup Language

O&M

Observations and Measurements

OMXML

Observations and Measurements XML Implementation

OGC

Open Geospatial Consortium

SOS

Sensor Observation Service

SWE

Sensor Web Enablement

UML

Unified Modeling Language

XML

Extensible Markup Language

XSD

W3C XML Schema Definition Language

5.2

Schema language

The XML implementation specified in this Standard is described using the XML Schema language (XSD) [XML Schema Part 1: Structures , XML Schema Part 2: Datatypes] and Schematron [ISO/IEC 19757-3, Information technology — Document Schema Definition Languages (DSDL) — Part 3: Rule-based validation — Schematron ]. 5.3

Document presentation of the specification

This document presents the OMXML specification using a representation that follows the structures defined in the OGC Policy [The Specification Model — A Standard for Modular specifications]. All normative material is organized as requirements, requirements classes, conformance tests and conformance classes. Each is identified with a URI, and the content and dependencies are described in tables whose structure matches the specification model.

OGC 10-025r1

XML Schema for Observations and Sampling Features

6.1

Introduction

6.2

XML Schema Packaging

OMXML is packaged in schema documents describing four XML namespaces together with 16 Schematron schemas defining additional XML constraints. The OMXML schemas are available from the OGC schema repository at http://schemas.opengis.net. There are dependencies on components from seven XML namespaces described in other standards. NOTE: Different XML Namespaces allow for independent maintenance (versioning) of groups of components without impacting on their dependencies.

The XML Namespaces for OMXML and their representations as XML Schema documents are listed in Table 2. The OMXML Schematron schemas are listed in Table 3. The external dependencies are listed in Table 4. The direct dependencies between XML Schemas (implemented as <import> elements) are shown in Figure 1. NOTE: In the XML Schema context, direct dependencies are those namespaces that are the target of an <xs:import> element. In the Schematron context, dependencies are loaded using <sch:ns> and <xsl:import-schema> elements.

obj ect XML Schemas

om spec

gml sam

sams gmd

xlink

Figure 1. OMXML XML Schema dependencies. Dependency arrows indicate <import> elements in the schemas. Names correspond to the default namespace prefixes listed in Tables 2 and 4.

OGC 10-025r1

6.3

XML elements

The schema is conformant to the rules for a GML Application Schema [OGC Geography Markup Language v3.2] and follows a UML to XML encoding rule explained in Annex C. This means that UML classes are implemented as XML elements, through global declarations in the XML schema. The correspondence of XML elements to the classes from OGC Observations and Measurements v2.0 is given in Table 5. The XML encoding also makes use of type identifiers, provided as OGC URIs. A mapping of the UML classes to OGC URIs, and the corresponding XML content model constraints are given in Tables 6 and 7. These are used in the requirements classes described in Clause 7. 6.4

Conformance with O&M model

OMXML satisfies the 'Conformance Classes related to Application Schemas including Observations and Measurements' listed in Clause 2.2 of OGC Observations and Measurements v2.0 . The map from O&M v2.0 Conformance Classes to OMXML is given in Table 8. NOTE: the conceptual model in OGC Observations and Measurements v2.0 specifies specialized observation types with coverage results. However, the XML encoding for coverages is under active discussion at the time of preparation of this standard, so there is no specific implementation of these in OMXML pending resolution of this discussion. Note that the generic observation class may still have a coverage-valued result.

OGC 10-025r1

Table 2 — XML Namespaces defined for this implementation of the Observations and Measurements schema XML Namespace

Default namespace prefix

Canonical location of all-components schema document

http://www.opengis.net/om/2.0

http://schemas.opengis.net/om/2.0/observation.xsd

http://www.opengis.net/sampling/2.0

sam

http://schemas.opengis.net/sampling/2.0/samplingFeature.xsd

http://www.opengis.net/samplingSpatial/2.0

sams

http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplingFeature.xsd

http://www.opengis.net/samplingSpecimen/2.0

spec

http://schemas.opengis.net/samplingSpecimen/2.0/specimen.xsd

Table 3 — Schematron schemas used in this implementation of the Observations and Measurements schema Schematron schemas for observations

Schematron schemas for observations and sampling features

http://schemas.opengis.net/om/2.0/categoryObservation.sch

http://schemas.opengis.net/om/2.0/complexObservation.sch

http://schemas.opengis.net/om/2.0/countObservation.sch

http://schemas.opengis.net/om/2.0/SWEArrayObservation.sch

http://schemas.opengis.net/om/2.0/geometryObservation.sch

http://schemas.opengis.net/om/2.0/SWEScalarObservation.sch

http://schemas.opengis.net/om/2.0/measurement.sch

http://schemas.opengis.net/samplingSpatial/2.0/samplingCurve.sch

http://schemas.opengis.net/om/2.0/spatialObservation.sch

http://schemas.opengis.net/samplingSpatial/2.0/samplingPoint.sch

http://schemas.opengis.net/om/2.0/temporalObservation.sch

http://schemas.opengis.net/samplingSpatial/2.0/samplingSolid.sch

http://schemas.opengis.net/om/2.0/truthObservation.sch

http://schemas.opengis.net/samplingSpatial/2.0/samplingSurface.sch

http://schemas.opengis.net/om/2.0/resultTypeConsistent.sch

http://schemas.opengis.net/samplingSpatial/2.0/shapeTypeConsistent.sch

OGC 10-025r1

Table 4 — External XML Namespaces used in this implementation of the Observations and Measurements schema Standard

XML Namespace

Default namespace prefix

Canonical location of all-components schema document (if required)

XML Schema

http://www.w3.org/2001/XMLSchema

Schematron

http://purl.oclc.org/dsdl/schematron

sch

XSLT v2

http://www.w3.org/1999/XSL/Transform

xsl

XML Linking Language

http://www.w3.org/1999/xlink

xlink

http://schemas.opengis.net/xlink/1.0.0/xlinks.xsd

OGC GML 3.2.1

http://www.opengis.net/gml/3.2

gml

http://schemas.opengis.net/gml/3.2.1/gml.xsd

ISO TS 19139 metadata XML implementation

http://www.isotc211.org/2005/gmd

gmd

http://schemas.opengis.net/iso/19139/20070417/gmd/gmd.xsd

OGC SWE Common

http://www.opengis.net/swe/2.0

swe

http://schemas.opengis.net/sweCommon/2.0/swe.xsd

Table 5 — Map of UML classes in O&M v2.0 to XML elements in OMXML O&M v2.0

OMXML

O&M v2.0

OMXML

OM_CategoryObservation

om:OM_Observation

ObservationContext

om:ObservationContext

OM_ComplexObservation

om:OM_Observation

PreparationStep

spec:PreparationStep

OM_CountObservation

om:OM_Observation

SamplingFeatureComplex

sam:SamplingFeatureComplex

OM_DiscreteCoverageObservation

om:OM_Observation

SF_SamplingCurve

sams:SF_SpatialSamplingFeature

OM_GeometryObservation

om:OM_Observation

SF_SamplingFeature

sam:SF_SamplingFeature

OM_Measurement

om:OM_Observation

SF_SamplingFeatureCollection

sam:SF_SamplingFeatureCollection

OM_Observation

om:OM_Observation

SF_SamplingPoint

sams:SF_SpatialSamplingFeature

OM_PointCoverageObservation

om:OM_Observation

SF_SamplingSolid

sams:SF_SpatialSamplingFeature

OM_TemporalObservation

om:OM_Observation

SF_SamplingSurface

sams:SF_SpatialSamplingFeature

OM_TimeSeriesObservation

om:OM_Observation1

SF_SpatialSamplingFeature

sams:SF_SpatialSamplingFeature

OM_TruthObservation

om:OM_Observation

SF_Specimen

spec:SF_Specimen

4.13

Coverage observations are implemented by the generic om:OM_Observation but there are no specific conformance tests.

OGC 10-025r1

Table 6 — Map of UML classes in O&M v2.0 to OGC observation-type names and observation result-types O&M v2.0

OGC Name

Content of result in OMXML1

OM_CategoryObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_CategoryObservation

type='gml:ReferenceType'

OM_ComplexObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_ComplexObservation

swe:DataRecord

OM_CountObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_CountObservation

type='xs:integer'

OM_DiscreteCoverageObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_DiscreteCoverageObservation

-2 or a reference using xlink attributes

OM_GeometryObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_GeometryObservation

gml:AbstractGeometry3

OM_Measurement

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_Measurement

type='gml:MeasureType'

OM_Observation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_Observation

type='xs:anyType'4

OM_PointCoverageObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_PointCoverageObservation

-2 or a reference using xlink attributes

OM_TemporalObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_TemporalObservation

gml:AbstractTimeObject3

OM_TimeSeriesObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_TimeSeriesObservation

-2 or a reference using xlink attributes

OM_TruthObservation

http://www.opengis.net/def/observationType/OGCOM/2.0/OM_TruthObservation

type='xs:boolean

An XML element name indicates that the result in this case has element content; type='…' indicates that the result has 'simple' (nonelement) content. 2

gml:AbstractDiscreteCoverage, cvi:CV_AbstractDiscreteCoverage, gml:MultiPointCoverage, cvi:CV_DiscretePointCoverage are available for encoding coverages in XML, but the preferred OGC encoding for coverages is under revision.

A concrete member of the substitution group shall substitute for an abstract element.

Any well-formed XML can substitute for xs:anyType.

OGC 10-025r1

Table 7 — Map of UML classes in O&M v2.0 to OGC sampling-feature-type names and spatial-sampling-feature shape-types O&M v2.0

OGC Name

Content of shape in OMXML

SF_SamplingFeature

http://www.opengis.net/def/samplingFeatureType/OGCOM/2.0/SF_SamplingFeature

SF_SpatialSamplingFeature

http://www.opengis.net/def/samplingFeatureType/OGCOM/2.0/SF_SpatialSamplingFeature

gml:AbstractGeometry1

SF_SamplingPoint

http://www.opengis.net/def/samplingFeatureType/OGCOM/2.0/SF_SamplingPoint

gml:Point

SF_SamplingCurve

http://www.opengis.net/def/samplingFeatureType/OGCOM/2.0/SF_SamplingCurve

gml:AbstractCurve1

SF_SamplingSurface

http://www.opengis.net/def/samplingFeatureType/OGCOM/2.0/SF_SamplingSurface

gml:AbstractSurface1

SF_SamplingSolid

http://www.opengis.net/def/samplingFeatureType/OGCOM/2.0/SF_SamplingSolid

gml:AbstractSolid1

SF_Specimen

http://www.opengis.net/def/samplingFeatureType/OGCOM/2.0/SF_SamplingSpecimen

A concrete member of the substitution group shall substitute for an abstract element.

OGC 10-025r1

Table 8 —Map of O&M v2.0 Conformance Classes to OMXML. O&M v2.0 Conformance Class Generic observation interchange

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Measurement interchange

http://www.opengis.net/spec/OMXML/2.0/conf/measurement

Specialized observation interchange

Category observation

http://www.opengis.net/spec/OMXML/2.0/conf/categoryObservation

Count observation

http://www.opengis.net/spec/OMXML/2.0/conf/countObservation

Truth observation

http://www.opengis.net/spec/OMXML/2.0/conf/truthObservation

Geometry observation

http://www.opengis.net/spec/OMXML/2.0/conf/geometryObservation

Temporal observation

http://www.opengis.net/spec/OMXML/2.0/conf/temporalObservation

Complex observation

http://www.opengis.net/spec/OMXML/2.0/conf/complexObservation

Discrete coverage observation

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Point coverage observation

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Coverage observation interchange

OMXML Conformance Class

Temporal coverage observation interchange

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Sampling feature interchange

http://www.opengis.net/spec/OMXML/2.0/conf/sampling

Spatial sampling feature interchange

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling

Sampling point interchange

http://www.opengis.net/spec/OMXML/2.0/conf/samplingPoint

Sampling curve interchange

http://www.opengis.net/spec/OMXML/2.0/conf/samplingCurve

Sampling surface interchange

http://www.opengis.net/spec/OMXML/2.0/conf/samplingSurface

Sampling solid interchange

http://www.opengis.net/spec/OMXML/2.0/conf/samplingSolid

Specimen interchange

http://www.opengis.net/spec/OMXML/2.0/conf/specimen

OpenGIS® Encoding Standard

OGC 10-025r1

Requirements for XML instances of Observations and Measurements

7.1

Introduction

An Observations and Measurements data document will include one or more of the XML elements listed in Table 5, or elements declared to be in the substitution group of one or more of these. The basic requirements for data instances are, therefore, formalized in terms of these elements. The corresponding conformance tests use document validation using various combinations of schema documents. 18 requirements classes are described in this clause. Figure 2 provides a graphical (informative) summary of the dependencies of the requirements classes. NOTE: ISO 19115, GML and W3C XML Schema are not formally structured with Requirements Classes in the sense described by The Specification Model — A Standard for Modular specifications (OGC 08-131r3), so the specific dependencies on these are indicated using clause numbers or internal document anchors instead.

7.2

Virtual typing strategy

Only a single XML element for observations is provided (om:OM_Observation) whose result is a wildcard (type='xs:anyType'). The specialized observations described in the conceptual model merely restrict the type of the result, so in the XML implementation this can be achieved efficiently through a lightweight XML Schema for the generic case, supplemented by Schematron to test the result type. An (optional) 'type' sub-element allows a data instance to be associated with a class in the conceptual model. Note that addition of a suitable xsi:type attribute on the result element would enable XML Schemabased validation strategies to be applied, but this tactic is optional. Schematron-based validation does not require it. Similarly, only a single XML element for spatial sampling features is provided (sams:SF_SpatialSamplingFeature) whose shape property contains a wildcard (gml:AbstractGeometry). The specialized spatial sampling features described in the conceptual model merely restrict the type of the shape, so in the XML implementation this can be achieved efficiently through a lightweight XML Schema for the generic case, supplemented by Schematron to test the shape. An (optional) 'type' sub-element allows a data instance to be associated with a class in the conceptual model. Note that addition of a suitable xsi:type attribute on the shape element would enable XML Schema-based validation strategies to be applied, but this tactic is optional. Schematron-based validation does not require it.

OGC 10-025r1

obj ect Requirements

iso:19139:clause:6

GML/3.2/clause/2.4

req/observ ation + +

observation-valid result-type-consistent req/sampling req/measurement +

sampling-valid

result-measure

req/categoryObserv ation +

GML/3.2/clause/8.2

GML/3.2/clause/7.2

req/specimen +

result-category

req/spatialSampling

specimen-valid

+ +

shape-type-consistent spatialSampling-valid

xmlschema-2/#integer req/countObserv ation +

result-integer req/samplingPoint

req/truthObserv ation +

xmlschema-2/#boolean

shape-point

result-boolean req/samplingCurv e

req/geometryObserv ation +

GML/3.2/clause/10

shape-curve

result-geometry req/samplingSurface

req/temporalObserv ation +

SWE/2.0/req/record-components

shape-surface

req/samplingSolid +

result-record

req/SWEScalarObserv ation +

result-temporal

req/complexObserv ation +

GML/3.2/clause/14

shape-solid

SWE/2.0/req/simple-components

Legend

result-SWEScalar

OMXML GML 3.2 req/SWEArrayObserv ation +

result-SWEBlock

SWE/2.0/req/block-components

ISO Metadata XML Schema datatypes SWE Common 2.0

req/SpatialObserv ation + + +

spatial-paramater-value spatial-parameter spatial-parameter-name

Figure 2. (informative) Dependencies of OMXML requirements classes. Note that req/observation has no external dependencies, so is the core requirements class in OMXML.

OGC 10-025r1

7.3

Requirements class: Generic observation data

XML representation of observation data requires use of the element om:OM_Observation or a member of its substitution group. There is a dependency on the requirements classes for GML documents, defined in Clause 2.4 of OGC Geography Markup Language v3.2. There is a dependency on the requirements class for Geographic Metadata XML encoding, described in Clause 6 of Geographic information – metadata – XML implementation. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/observation Target type

Data instance

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-2.4

Dependency

urn:iso:ts:iso:19139:clause:6

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/observation/observationvalid

Any XML element in the substitution group of om:OM_Observation SHALL be well-formed and valid Requirement

http://www.opengis.net/spec/OMXML/2.0/req/observation/result-typeconsistent

The content model of any om:result element SHALL be consistent with the value of the xlink:href attribute of the om:type element if one is present as a sub-element of the parent om:OM_Observation, according to the mapping given in Table 5. This is the core requirements class for all XML instances of Observations and Measurements. 7.4

Requirements class: Measurement data

XML representation of measurement data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is a scaled number. There is a dependency on the requirements class for GML schema, Basic Types, described in Clause 8.2 of OGC Geography Markup Language v3.2.

OGC 10-025r1

Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/measurement Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-8.2

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/measurement/result-measure

The XML element om:result SHALL have a value that matches the content model defined by gml:MeasureType. 7.5

Requirements class: Category observation data

XML representation of category observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result selects an item from a controlled vocabulary or ontology. There is a dependency on the requirements class for GML Base Schema Components, described in Clause 7.2 of OGC Geography Markup Language v3.2. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/categoryObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-7.2

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/categoryObservation/resultcategory

The XML element om:result SHALL have a value that matches the content model defined by gml:ReferenceType. 7.6

Requirements class: Count observation data

XML representation of count observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is an integer. There is a dependency on elements from XML Schema Part 2: Datatypes (clause 3.3.13).

OGC 10-025r1

Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/countObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.w3.org/TR/xmlschema-2/#integer

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/countObservation/resultinteger

The XML element om:result SHALL have a value that matches the content model defined by xs:integer. 7.7

Requirements class: Truth observation data

XML representation of truth observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is a truth value. There is a dependency on elements from XML Schema Part 2: Datatypes (clause 3.2.2). Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/truthObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.w3.org/TR/xmlschema-2/#boolean

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/truthObservation/resultboolean

The XML element om:result SHALL have a value that matches the content model defined by xs:boolean. 7.8

Requirements class: Geometry observation data

XML representation of geometry observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is a spatial object. There is a dependency on the requirements class for GML schema - Geometric Primitives, described in Clause 10 of OGC Geography Markup Language v3.2. Copyright © 2011 Open Geospatial Consortium.

OGC 10-025r1

Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/geometryObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/geometryObservation /result-geometry

The XML element om:result SHALL contain a subelement in the substitution group of gml:AbstractGeometry. 7.9

Requirements class: Temporal observation data

XML representation of temporal observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is a temporal object. There is a dependency on the requirements class for Temporal schema, described in Clause 14 of OGC Geography Markup Language v3.2. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/temporalObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-14

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/temporalObservation/res ult-time-object

The XML element om:result SHALL contain a subelement in the substitution group of gml:AbstractTimeObject. 7.10 Requirements class: Complex observation data

XML representation of complex observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is a simple data record or vector from the SWE Common Data Model.

OGC 10-025r1

There is a dependency on the requirements class for SWE Common –Record Components, described in Clause 8.2 of OGC SWE Common Data Model Encoding Standard v2.0. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/complexObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/spec/SWE/2.0/req/xsd-record-components

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/complexObservation/re sult-SWErecord

The XML element om:result SHALL contain a subelement swe:DataRecord or swe:Vector containing inline values. 7.11 Requirements class: SWE scalar observation data

XML representation of SWE observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is a simple data component from the SWE Common Data Model. There is a dependency on the requirements class for SWE Common – Basic Types and Simple Components, described in Clause 8.1 of OGC SWE Common Data Model Encoding Standard v2.0. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/SWEScalarObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/spec/SWE/2.0/req/xsd-simple-components

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservatio n/result-SWEBlock/result-SWEScalar The XML element om:result SHALL contain a concrete subelement in the substitution group swe:AbstractSimpleComponent containing an inline value.

OGC 10-025r1

7.12 Requirements class: SWE array observation data

XML representation of SWE observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation result is a block data component from the SWE Common Data Model. There is a dependency on the requirements class for SWE Common – Block Components, described in Clause 8.4 of OGC SWE Common Data Model Encoding Standard v2.0. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservation Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/spec/SWE/2.0/req/xsd-block-components

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservati on/result-SWEBlock The XML element om:result SHALL contain a subelement swe:DataArray, swe:Matrix or swe:DataStream containing inline values.

7.13 Requirements class: Spatial observation data

XML representation of spatial observation data requires that it satisfies the core requirements class for observation data, and adds the requirement that the observation shall have exactly one parameter which contains the sampling geometry of the observation. The sampling geometry represents the spatial extent where the observation result applies to. This is usually the extent of the observation's feature of interest but may also be computed or determined by other means. There is a dependency on the requirements class for GML schema - Geometric Primitives, described in Clause 10 of OGC Geography Markup Language v3.2. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObservation Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObservation/spa

OGC 10-025r1

tial-parameter

A spatial observation SHALL have exactly one sampling geometry encoded as XML element om:parameter in an observation. Requirement

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObservation/spa tial-parameter-name The xlink:href attribute in the XML element om:name of the om:parameter/om:NamedValue element that carries the sampling geometry SHALL have the value http://www.opengis.net/def/param-name/OGCOM/2.0/samplingGeometry.

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObservation/spa tial-parameter-value The XML element om:value in the om:parameter/om:NamedValue element SHALL contain a subelement in the substitution group of gml:AbstractGeometry.

7.14 Requirements class: Sampling feature data

XML representation of sampling feature data requires use of the element sam:SF_SamplingFeature or a member of its substitution group. There is a dependency on the requirements classes for GML documents, defined in Clause 2.4 of OGC Geography Markup Language v3.2. There is a dependency on the requirements class for Geographic Metadata XML encoding, described in Clause 6 of Geographic information – metadata – XML implementation. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/sampling Target type

Data instance

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-2.4

Dependency

urn:iso:ts:iso:19139:clause:6

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/observation

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/sampling/sampling-valid Any XML element in the substitution group of sam:SF_SamplingFeature SHALL be well-formed and valid.

OGC 10-025r1

This is the core requirements class for all XML instances of Sampling Features. 7.15 Requirements class: Spatial sampling feature data

XML representation of spatial sampling feature data requires use of the element sams:SF_SpatialSamplingFeature or a member of its substitution group. There is a dependency on the requirements class for GML schema – Abstract Geometry, described in Clause 10.1.3 of OGC Geography Markup Language v3.2. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/sampling

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10.1.3

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling/spatial Sampling-valid

Any XML element in the substitution group of sams:SF_SpatialSamplingFeature SHALL be well-formed and valid. Requirement

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling/shapetype-consistent

The content model of any sams:shape element SHALL be consistent with the value of the xlink:href attribute of the sam:type element if one is present as a sub-element of the parent sams:SF_SpatialSamplingFeature, according to the mapping given in Table 6. This is the core requirements class for all XML instances of Spatial Sampling Features. 7.16 Requirements class: Sampling point data

XML representation of sampling point data requires that it satisfies the core requirements class for spatial sampling feature data, and adds the requirement that the shape is a point. There is a dependency on the requirements class for GML schema - Geometric Primitives, described in Clause 10 of OGC Geography Markup Language v3.2. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/samplingPoint

OGC 10-025r1

Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingPoint/shapepoint

The XML element sams:shape SHALL contain a subelement in the substitution group of gml:Point or a link to a representation of a point. 7.17 Requirements class: Sampling curve data

XML representation of sampling curve data requires that it satisfies the core requirements class for spatial sampling feature data, and adds the requirement that the shape is a curve. There is a dependency on the requirements class for GML schema - Geometric Primitives, described in Clause 10 of OGC Geography Markup Language v3.2. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/samplingCurve Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingCurve/shapecurve

The XML element sams:shape SHALL contain a subelement in the substitution group of gml:AbstractCurve or a link to a representation of a curve. 7.18 Requirements class: Sampling surface data

XML representation of sampling surface data requires that it satisfies the core requirements class for spatial sampling feature data, and adds the requirement that the shape is a surface. There is a dependency on the requirements class for GML schema - Geometric Primitives, described in Clause 10 of OGC Geography Markup Language v3.2.

OGC 10-025r1

Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/samplingSurface Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingSurface/shapesurface

The XML element sams:shape SHALL contain a subelement in the substitution group of gml:AbstractSurface or a link to a representation of a surface. 7.19 Requirements class: Sampling solid data

XML representation of sampling solid data requires that it satisfies the core requirements class for spatial sampling feature data, and adds the requirement that the shape is a solid. There is a dependency on the requirements class for GML schema - Geometric Primitives, described in Clause 10 of OGC Geography Markup Language v3.2. Requirements Class

http://www.opengis.net/spec/OMXML/2.0/req/samplingSolid Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingSolid/shapesolid

The XML element sams:shape SHALL contain a subelement in the substitution group of gml:AbstractSolid or a link to a representation of a solid. 7.20 Requirements class: Specimen data

XML representation of specimen data requires use of the element spec:SF_Specimen or a member of its substitution group.

OGC 10-025r1

There is a dependency on the requirements class for GML schema – Referencing, described in Clause 7.2.3.7 of OGC Geography Markup Language v3.2. There is a dependency on the requirements class for GML schema – Abstract Geometry, described in Clause 10.1.3 of OGC Geography Markup Language v3.2.Requirements Class http://www.opengis.net/spec/OMXML/2.0/req/specimen

Target type

Data instance

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/sampling

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-7.2.3.7

Dependency

http://www.opengis.net/doc/IS/GML/3.2#clause-10.1.3

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/specimen/specimen-valid

Any XML element in the substitution group of spec:SF_Specimen SHALL be well-formed and valid. This is the core requirements class for all XML instances of Specimens.

OGC 10-025r1

Media types for Observations and Measurements data

Observations and measurements data conforming to this specification is encoded in GML-conformant XML documents. The standard MIME-type and sub-type for GML data should be used to indicate the encoding in internet exchange, as specified in MIME Media Types for GML , namely application/gml+xml

OGC 10-025r1

Annex A Abstract test suite (normative)

A.1 Conformance class: Generic observation data

This is the core conformance class for XML implementation of Observations and Measurements data. There is a dependency on the conformance class for GML documents, defined in clause 2.4 (with the test suite in A.3) of OGC Geography Markup Language v3.2. There is a dependency on the conformance class for Geographic Metadata XML encoding, described in Clause 2 and Annex A of Geographic information – metadata – XML implementation. Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/observation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/observation

Dependency

http://www.opengis.net/doc/IS/GML/3.2/clause/2.4 NOTE: The OMXML schema imports the XML Schema for GML 3.2. However GML 3.2 conformance includes additional tests that are not enforced by schema validation.

Dependency

urn:iso:ts:iso:19139:clause:2 NOTE: The OMXML schema imports the XML Schema for Geographic Metadata. However ISO 19139 conformance includes additional tests that are not enforced by schema validation.

Test

http://www.opengis.net/spec/OMXML/2.0/conf/observation/observationvalid Requirement

http://www.opengis.net/spec/OMXML/2.0/req/observation/ observation-valid

Test purpose

Verify that any XML element in the substitution group of om:OM_Observation is well-formed and valid

Test method

Validate the XML document using the XML schema document http://schemas.opengis.net/om/2.0/observation.xsd. Pass if no errors reported. Fail otherwise.

Test type

Basic

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Test

http://www.opengis.net/spec/OMXML/2.0/conf/observation/result-typeconsistent Requirement

http://www.opengis.net/spec/OMXML/2.0/req/observation/r esult-type-consistent

Test purpose

Verify that the content model of any om:result element is consistent with the value of the xlink:href attribute of the om:type element if one is present as a sub-element of the parent om:OM_Observation, according to the mapping given in Table 5.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/resultTypeConsistent.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.2 Conformance class: Measurement data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/measurement Requirements

http://www.opengis.net/spec/OMXML/2.0/req/measurement

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Test

http://www.opengis.net/spec/OMXML/2.0/conf/measurement/resultmeasure

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/measurement /result-measure

Test purpose

Verify that the XML element om:result has a value that matches the content model defined by gml:MeasureType.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/measurement.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

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A.3 Conformance class: Category observation data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/categoryObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/categoryObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Test

http://www.opengis.net/spec/OMXML/2.0/conf/categoryObservation/resultcategory Requirement

http://www.opengis.net/spec/OMXML/2.0/req/categoryObse rvation/result-category

Test purpose

Verify that the XML element om:result has a value that matches the content model defined by gml:ReferenceType

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/categoryObservation.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.4 Conformance class: Count observation data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/countObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/countObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Test

http://www.opengis.net/spec/OMXML/2.0/conf/countObservation/resultinteger Requirement

http://www.opengis.net/spec/OMXML/2.0/req/countObserv ation/result-integer

Test purpose

Verify that the XML element om:result has a value that matches the content model defined by xs:integer.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/countObservation.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

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A.5 Conformance class: Truth observation data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/truthObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/truthObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Test

http://www.opengis.net/spec/OMXML/2.0/conf/truthObservation/resultboolean Requirement

http://www.opengis.net/spec/OMXML/2.0/req/truthObserva tion/result-boolean

Test purpose

Verify that the XML element om:result has a value that matches the content model defined by xs:boolean.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/truthObservation.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.6 Conformance class: Geometry observation data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/geometryObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/geometryObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Test

http://www.opengis.net/spec/OMXML/2.0/conf/geometryObservation/result -geometry

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/geometryObs ervation/result-geometry

Test purpose

Verify that XML element om:result contains a subelement in the substitution group of gml:AbstractGeometry.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/geometryObservation.sch. Pass if no errors reported. Fail otherwise.

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Test type

Capability

A.7 Conformance class: Temporal observation data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/temporalObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/temporalObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Test

http://www.opengis.net/spec/OMXML/2.0/conf/temporalObservation/result -time-object Requirement

http://www.opengis.net/spec/OMXML/2.0/req/temporalObs ervation/result-time-object

Test purpose

Verify that XML element om:result contains a subelement in the substitution group of gml:AbstractTimeObject.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/temporalObservation.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.8 Conformance class: Complex observation data

There is a dependency on the conformance class for SWE Common – Record Components, described in Annex A.9 of OGC SWE Common Data Model Encoding Standard v2.0. Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/complexObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/complexObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Dependency

http://www.opengis.net/spec/SWE/2.0/conf/xsd-record-components

Test

http://www.opengis.net/spec/OMXML/2.0/conf/complexObservation/resultrecord

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Requirement

http://www.opengis.net/spec/OMXML/2.0/req/complexObse rvation/result-SWErecord

Test purpose

Verify that the XML element om:result contains a subelement swe:DataRecord or swe:Vector with inline values.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/complexObservation.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.9 Conformance class: SWE scalar observation data

There is a dependency on the conformance class for SWE Common – Basic Types and Simple Components, described in Annex A.8 of OGC SWE Common Data Model Encoding Standard v2.0. Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/SWEScalarObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservation/resul t-SWEBlock

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Dependency

http://www.opengis.net/spec/SWE/2.0/conf/xsd-simple-components

Test

http://www.opengis.net/spec/OMXML/2.0/conf/SWEScalarObservation/res ult-SWEscalar

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayO bservation/result-SWEBlock/result-SWEScalar

Test purpose

Verify that the XML element om:result contains a concrete subelement in the substitution group swe:AbstractScalarComponent containing an inline value..

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/SWEScalarObservation.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

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A.10 Conformance class: SWE array observation data

There is a dependency on the conformance class for SWE Common – Block Components, described in Annex A.11 of OGC SWE Common Data Model Encoding Standard v2.0. Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/SWEArrayObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Dependency

http://www.opengis.net/spec/SWE/2.0/conf/xsd-block-components

Test

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservation/resul t-SWEBlock Requirement

http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayO bservation/result-SWEBlock

Test purpose

Verify that the XML element om:result contains a subelement swe:DataArray, swe:Matrix or swe:DataStream containing inline values.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/SWEArrayObservation.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.11 Conformance class: Spatial observation data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/spatialObservation Requirements

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObservation

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/observation

Test

http://www.opengis.net/spec/OMXML/2.0/conf/spatialObservation/spatialparameter Requiremen t

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObser vation/spatial-parameter

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Requiremen t

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObser vation/spatial-parameter-name

Requiremen t

http://www.opengis.net/spec/OMXML/2.0/req/SpatialObser vation/spatial-parameter-value

Test purpose

Verify that the observation has exactly one sampling geometry encoded as XML element om:parameter/om:NamedValue in an observation, and that its sub-element om:name has an xlink:href attribute with the value http://www.opengis.net/def/paramname/OGC-OM/2.0/samplingGeometry, and its sub-element om:value contains a subelement in the substitution group of gml:AbstractGeometry.

Test method Validate the XML document using the Schematron document http://schemas.opengis.net/om/2.0/spatialObservation.sch. Pass if no errors reported. Fail otherwise. Test type

Capability

A.12 Conformance class: Sampling feature data

This is the core conformance class for XML implementation of Sampling Feature data. There is a dependency on the conformance class for GML documents, defined in clause 2.4 (with the test suite in A.3) of OGC Geography Markup Language v3.2. There is a dependency on the conformance class for Geographic Metadata XML encoding, described in Clause 2 and Annex A of Geographic information – metadata – XML implementation. Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/sampling Requirements

http://www.opengis.net/spec/OMXML/2.0/req/sampling

Dependency

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Test

http://www.opengis.net/spec/OMXML/2.0/conf/sampling/sampling-valid Requirement

http://www.opengis.net/spec/OMXML/2.0/req/sampling/sam pling-valid

Test purpose

Verify that any XML element in the substitution group of sam:SF_SamplingFeature is well-formed and valid

Test method

Validate the XML document using the XML schema document http://schemas.opengis.net/sampling/2.0/samplingFeature.xsd. Pass if no errors reported. Fail otherwise.

Test type

Basic

A.13 Conformance class: Spatial Sampling feature data

This is the core conformance class for XML implementation of Spatial Sampling Feature data. Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling Requirements

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampling

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/sampling

Test

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling/spatialSam pling-valid

Test

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/sampling/sa mpling-valid

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampl ing/spatialSampling-valid

Test purpose

Verify that any XML element in the substitution group of sams:SF_SpatialSamplingFeature is well-formed and valid

Test method

Validate the XML document using the XML schema document http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplin gFeature.xsd. Pass if no errors reported. Fail otherwise.

Test type

Basic

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling/shape-typeconsistent

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Requirement

http://www.opengis.net/spec/OMXML/2.0/req/spatialSampl ing/shape-type-consistent

Test purpose

Verify that the content model of any sams:shape element is consistent with the value of the xlink:href attribute of the sam:type element if one is present as a sub-element of the parent sams:SF_SpatialSamplingFeature, according to the mapping given in Table 6.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/samplingSpatial/2.0/shapeTypeCon sistent.sch. Pass if no errors reported. Fail otherwise..

Test type

Capability

A.14 Conformance class: Sampling point data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/samplingPoint Requirements

http://www.opengis.net/spec/OMXML/2.0/req/samplingPoint

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling

Test

http://www.opengis.net/spec/OMXML/2.0/conf/samplingPoint/shape-point

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingPoin t/shape-point

Test purpose

Verify that XML element sams:shape contains a subelement in the substitution group of gml:Point or a link to a representation of a point.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/samplingSpatial/2.0/samplingPoint.s ch. Pass if no errors reported. Fail otherwise.

Test type

Capability

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A.15 Conformance class: Sampling curve data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/samplingCurve Requirements

http://www.opengis.net/spec/OMXML/2.0/req/samplingCurve

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling

Test

http://www.opengis.net/spec/OMXML/2.0/conf/samplingCurve/shape-curve Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingCur ve/shape-curve

Test purpose

Verify that the XML element sams:shape contains a subelement in the substitution group of gml:AbstractCurve or a link to a representation of a curve.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/samplingSpatial/2.0/samplingCurve. sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.16 Conformance class: Sampling surface data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/samplingSurface Requirements

http://www.opengis.net/spec/OMXML/2.0/req/samplingSurface

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling

Test

http://www.opengis.net/spec/OMXML/2.0/conf/samplingSurface/shapesurface Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingSurf ace/shape-surface

Test purpose

Verify that the XML element sams:shape contains a subelement in the substitution group of gml:AbstractSurface or a link to a representation of a surface.

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Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/samplingSpatial/2.0/samplingSurfac e.sch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.17 Conformance class: Sampling solid data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/samplingSolid Requirements

http://www.opengis.net/spec/OMXML/2.0/req/samplingSolid

Dependency

http://www.opengis.net/spec/OMXML/2.0/conf/spatialSampling

Test

http://www.opengis.net/spec/OMXML/2.0/conf/samplingSolid/shape-solid Requirement

http://www.opengis.net/spec/OMXML/2.0/req/samplingSoli d/shape-solid

Test purpose

Verify that the XML element sams:shape contains a subelement in the substitution group of gml:AbstractSolid or a link to a representation of a solid.

Test method

Validate the XML document using the Schematron document http://schemas.opengis.net/samplingSpatial/2.0/samplingSolid.s ch. Pass if no errors reported. Fail otherwise.

Test type

Capability

A.18 Conformance class: Specimen data Conformance Class http://www.opengis.net/spec/OMXML/2.0/conf/specimen Requirements

http://www.opengis.net/spec/OMXML/2.0/req/specimen

Dependency

http://www.opengis.net/spec/OMXML/2.0/req/sampling

Test

http://www.opengis.net/spec/OMXML/2.0/conf/specimen/specimen-valid

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Requirement

http://www.opengis.net/spec/OMXML/2.0/req/sampling/sam pling-valid

Requirement

http://www.opengis.net/spec/OMXML/2.0/req/specimen/spe cimen-valid

Test purpose

Verify that any XML element in the substitution group of spec:SF_Specimen is well-formed and valid

Test method

Validate the XML document using the XML Schema document http://schemas.opengis.net/samplingSpecimen/2.0/specimen.xsd . Pass if no errors reported. Fail otherwise.

Test type

Basic

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Annex B XML Schema implementation (informative)

B.1

GML Application Schema

The implementation of OMXML is a GML Application Schema, satisfying the requirements of clause 21 and tests in clause 2.2 and annex A.1 from GML v3.2 [OGC Geography Markup Language v3.2]. B.2

Encoding rule

B.2.1 Variations from standard GML encoding rule

The encoding of the model from [OGC Observations and Measurements v2.0 ] generally follows the UML-XML encoding rule described in Annex E of [OGC Geography Markup Language v3.2]. The following elements of the encoding rule are variations from normal practice: 1. Class attributes of type 'GenericName' are implemented as gml:ReferenceType. This encourages the use of pre-registered values identified using URIs, and referred to using an unambiguous syntax. 2. Association classes are encoded following the rule described in GML Change Request 08-109. 3. The following XML elements whose cardinality in minOccurs=1, are classified nillable="true": om:procedure, om:observedProperty, om:featureOfInterest, sam:sampledFeature. This allows an element to appear in an instance marked xsi:nil="true" with missing content, an carry the attribute nilReason to provide an explanation for the missing data (see 8.2.3.2 in [OGC Geography Markup Language v3.2]). This supports applications where the information, though strictly required, is not available. 4. The abstract classes OM_Process and SF_Process are each implemented as a wildcard: <any namespace="##any" processContents="lax" />. This recognizes that specific encodings are in current use in some communities, and permits their use in OMXML provided only that a process description is encapsulated in a single XML element. 5. Some specializations are encoded using virtual sub-typing and constraints, instead of the usual XML schema derivation and new element declarations. This makes for a lighter-weight schema and easier software implementation. 6. Many observation and sampling feature properties are declared globally, and some included in globally-declared content-model groups, instead of as local 42

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element declarations (as described in Clause E.2.4.11 in [OGC Geography Markup Language v3.2]). Globally declared properties can be more easily re-used in complex-type definitions. Variations 5 and 6 are discussed in more detail in the following sub-clauses. B.2.2 Virtual sub-typing of specialized classes

Where an implementation includes classes that specialize their parent only by restricting the value-space of one or more properties (attributes or association targets) of the parent, then: (a) the specializations shall be implemented by the same XML element as the parent class. The content of the properties whose value-space is restricted shall be tested using a constraint language to verify that they match the required model; (b) the XML element that implements the parent class shall carry an optional property 'type' whose value provides the name of the specialization. The latter rule can only be triggered if the implementation includes the parent class as well as the specializations. An example instance of a Measurement implemented using virtual sub-typing is shown Listing 1. Listing 1 – Measurement implemented by virtual sub-typing <om:OM_Observation gml:id="m1"> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC-OM/2.0/OM_Measurement"/> <om:phenomenonTime> <gml:TimeInstant gml:id="ot1t"> <gml:timePosition>2005-01-11T16:22:25.00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <om:resultTime xlink:href="#ot1t"/> <om:procedure xlink:href="http://www.example.org/register/process/scales34.xml"/> <om:observedProperty xlink:href="urn:ogc:def:phenomenon:OGC:mass"/> <om:featureOfInterest xlink:href="http://wfs.example.org?request=getFeature&featureid=f37f "/> <om:result uom="kg">0.28</om:result> </om:OM_Observation>

The value of om:type/@xlink:href is http://www.opengis.net/def/observationType/OGCOM/2.0/OM_Measurement. This is used to provide the context for a result consistency test using a Schematron pattern [ISO/IEC 19757-3, Information technology — Document Schema Definition Languages (DSDL) — Part 3: Rule-based validation — Schematron ], as shown in Listing 2. Listing 2 – Schematron pattern for validating the Measurement implementation <pattern id="observation-type-measurement"> <rule context="//om:OM_Observation[ om:type/@xlink:href='http://www.opengis.net/def/observationType/OGC-OM/2.0/OM_Measurement' ] "> <assert xmlns="http://purl.oclc.org/dsdl/schematron" test="( om:result/@uom castable as gml:UomSymbol Copyright © 2011 Open Geospatial Consortium.

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or om:result/@uom castable as gml:UomURI ) and om:result castable as xs:double" >result model must match gml:MeasureType</assert> </rule> </pattern>

In this Schematron the assert element explicitly tests that the content of the result element matches the model of gml:MeasureType. Similar consistency tests are provided for all the other standard observation-types. B.2.3 Global property elements

In the schema document observation.xsd, the set of basic observation properties is declared as part of the group OM_CommonProperties and a global element declaration for 'result', as shown in Listing 3. Listing 3 – Observation property declarations <group name="OM_CommonProperties"> <sequence> <element name="type" type="gml:ReferenceType" minOccurs="0"/> <element name="metadata" type="gmd:MD_Metadata_PropertyType" minOccurs="0"/> <element name="relatedObservation" type="om:ObservationContextPropertyType" minOccurs="0" maxOccurs="unbounded"/> <element name="phenomenonTime" type="om:TimeObjectPropertyType"/> <element name="resultTime" type="gml:TimeInstantPropertyType"/> <element name="validTime" type="gml:TimePeriodPropertyType" minOccurs="0"/> <element name="procedure" type="om:OM_ProcessPropertyType"/> <element name="parameter" type="om:NamedValuePropertyType" minOccurs="0" maxOccurs="unbounded"/> <element name="observedProperty" type="gml:ReferenceType"/> <element name="featureOfInterest" type="gml:FeaturePropertyType"/> <element name="resultQuality" type="gmd:DQ_Element_PropertyType" minOccurs="0"/> </sequence> </group> <element name="result" type="anyType"/>

Listing 2. shows an implementation for a possible observation class 'Some_Observation'. The declaration for 'result' type overrides the generic result, and the definition for Some_ObservationType uses this and the content-model group in a complex type definition that supports declaration of an element for Some_Observation that is schema valid and allows for the correct substitution group membership. Listing 2 – Some_Observation type definition and element declaration <element name="result" type="ex:SomeType" substitutionGroup="om:result"/> <complexType name="Some_ObservationType"> <complexContent> <restriction base="om:OM_ObservationType"> <sequence> <group ref="gml:StandardObjectProperties"/> <group ref="om:OM_CommonProperties"/> <element ref="ex:result"/> </sequence>

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</restriction> </complexContent> </complexType> <element name="Some_Observation" type="ex:Some_ObservationType" substitutionGroup="om:OM_Observation"/>

Without the global element and group declarations, redefinition of the 'result' property would not be possible because the base schema and specialization are in different namespaces.

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Annex C Example OMXML documents (informative)

C.1 Introduction

The following documents illustrate the use of OMXML. C.2 Observation data C.2.1

A scalar observation whose result is a Measure

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/measurement <om:OM_Observation gml:id="obsTest1" xmlns:om="http://www.opengis.net/om/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd"> <gml:description>Observation test instance: fruit mass</gml:description> <gml:name>Observation test 1</gml:name> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐OM/2.0/OM_Measurement"/> <om:phenomenonTime> <gml:TimeInstant gml:id="ot1t"> <gml:timePosition>2005‐01‐11T16:22:25.00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <om:resultTime xlink:href="#ot1t"/> <!‐‐ a notional URL identifying a procedure ... ‐‐> <om:procedure xlink:href="http://www.example.org/register/process/scales34.xml"/> <!‐‐ environmental conditions during measurement ‐‐> <om:parameter> <om:NamedValue> <om:name xlink:href="http://sweet.jpl.nasa.gov/ontology/property.owl#Temperature"/> <om:value xsi:type="gml:MeasureType" uom="Cel">22.3</om:value> </om:NamedValue> </om:parameter> <!‐‐ a notional URN identifying the observed property ‐‐> <om:observedProperty xlink:href="http://sweet.jpl.nasa.gov/2.0/phys.owl#Mass"/> <!‐‐ a notional WFS call identifying the object regarding which the observation was made ‐‐> <om:featureOfInterest xlink:href="http://wfs.example.org?request=getFeature&featureid=fruit37f "/> <om:result xsi:type="gml:MeasureType" uom="kg">0.28</om:result> <!‐‐ The XML Schema type of the result is indicated using the value of the xsi:type attribute ‐‐>

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</om:OM_Observation>

C.2.2

A scalar observation whose result is a classification or category

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/categoryObservation <om:OM_Observation gml:id="obsTest2" xmlns:om="http://www.opengis.net/om/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd"> <gml:description>Observation test instance: fruit identification</gml:description> <gml:name>Observation test 1</gml:name> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐OM/2.0/OM_CategoryObservation"/> <om:phenomenonTime> <gml:TimeInstant gml:id="ot2t"> <gml:timePosition>2005‐01‐11T17:22:25.00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <om:resultTime xlink:href="#ot2t"/> <om:procedure xlink:title="Abby Bachrach‐Cox" xlink:role="http://sweet.jpl.nasa.gov/2.0/biolAnimal.owl#Human" xlink:arcrole="http://www.example.org/party/role/field_worker" xlink:href="http://www.example.org/party/individual/abc123"/> <om:observedProperty xlink:href="http://sweet.jpl.nasa.gov/2.0/biol.owl#Species"/> <om:featureOfInterest xlink:href="http://wfs.example.org?request=getFeature&featureid=fruit37f "/> <om:result xsi:type="gml:ReferenceType" xlink:title="Banana" xlink:href="http://en.wikipedia.org/wiki/List_of_fruits#Banana"/> </om:OM_Observation>

C.2.3

An observation whose result is provided out-of-band

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/observation <om:OM_Observation gml:id="OPTest1" xmlns:om="http://www.opengis.net/om/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd"> Copyright © 2011 Open Geospatial Consortium.

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<gml:description>Observation instance with remote result</gml:description> <gml:name>Observation Pointer 1</gml:name> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐OM/2.0/OM_TimeSeriesObservation"/> <om:phenomenonTime> <gml:TimePeriod gml:id="op1t"> <gml:beginPosition>2005‐01‐11T17:22:25.00</gml:beginPosition> <gml:endPosition>2005‐01‐11T18:22:25.00</gml:endPosition> </gml:TimePeriod> </om:phenomenonTime> <om:resultTime> <gml:TimeInstant gml:id="eoplt"> <gml:timePosition>2005‐01‐11T18:22:25.00</gml:timePosition> </gml:TimeInstant> </om:resultTime> <om:procedure xsi:nil="true" nilReason="unknown"/> <om:observedProperty xlink:href="urn:example:RelativeHumidity"/> <om:featureOfInterest xlink:href="http://my.example.org/wfs%26request=getFeature%26;featureid=789002" xlink:role="urn:ogc:def:featureType:NWS:station"/> <om:result xlink:href="http://my.example.org/results%3f798002%26property=RH" xlink:role="application/xmpp" xsi:type="gml:ReferenceType"/> </om:OM_Observation>

C.2.4

Observation with complex result

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/complexObservation <om:OM_Observation gml:id="COTest3" xmlns:om="http://www.opengis.net/om/2.0" xmlns:swe="http://www.opengis.net/swe/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd http://www.opengis.net/swe/2.0 http://schemas.opengis.net/sweCommon/2.0/swe.xsd"> <gml:description>Complex Observation test instance</gml:description> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐OM/2.0/OM_ComplexObservation"/> <om:phenomenonTime> <gml:TimeInstant gml:id="ot1t"> <gml:timePosition>2005‐01‐11T17:22:25.00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime>

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<om:resultTime xlink:href="#ot1t"/> <om:procedure xlink:href="http://www.example.org/register/process/weatherStation3"/> <om:observedProperty xlink:href="http://sweet.jpl.nasa.gov/2.0/atmo.owl#Weather"/> <om:featureOfInterest xlink:href="http://www.ga.gov.au/bin/gazd01?rec=293604" xlink:role="urn:cgi:featureType:SEEGRID:framework:locality"/> <om:result xsi:type="swe:DataRecordPropertyType"> <swe:DataRecord definition="record_weather.xml"> <swe:field name="AirTemperature"> <swe:Quantity> <swe:uom xlink:href="Cel"/> <swe:value>35.1</swe:value> </swe:Quantity> </swe:field> <swe:field name="WindSpeed"> <swe:Quantity> <swe:uom xlink:href="km.h‐1"/> <swe:value>6.5</swe:value> </swe:Quantity> </swe:field> <swe:field name="WindDirection"> <swe:Quantity> <swe:uom xlink:href="deg"/> <swe:value>085.0</swe:value> </swe:Quantity> </swe:field> <swe:field name="AtmosphericPressure"> <swe:Quantity> <swe:uom xlink:href="hPa"/> <swe:value>950.</swe:value> </swe:Quantity> </swe:field> <swe:field name="RelativeHumidity"> <swe:Quantity> <swe:uom xlink:href="percent"/> <swe:value>32.</swe:value> </swe:Quantity> </swe:field> <swe:field name="visibility"> <swe:Category> <swe:value>clear</swe:value> </swe:Category> </swe:field> Copyright © 2011 Open Geospatial Consortium.

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</swe:DataRecord> </om:result> </om:OM_Observation>

C.2.5

Observation with complex result –SWE TextBlock encoding

Conforms to http://www.opengis.net/spec/OMXML/2.0/req/SWEArrayObservation <om:OM_Observation gml:id="O35235" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:om="http://www.opengis.net/om/2.0" xmlns:swe="http://www.opengis.net/swe/1.0/gml32" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xsi:schemaLocation="http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd"> <gml:name>Weather Data</gml:name> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐OM/2.0/OM_SWEObservation"/> <om:phenomenonTime> <gml:TimePeriod gml:id="TP2523"> <gml:beginPosition>2007‐04‐01T00:00:00.000‐06:00</gml:beginPosition> <gml:endPosition>2007‐04‐01T03:40:00.000‐06:00</gml:endPosition> </gml:TimePeriod> </om:phenomenonTime> <om:resultTime> <gml:TimeInstant gml:id="eTP2523"> <gml:timePosition>2007‐04‐01T03:40:00.000‐06:00</gml:timePosition> </gml:TimeInstant> </om:resultTime> <om:procedure xlink:href="urn:vast:sensor:weatherStation"/> <om:observedProperty xlink:href="weather1.xml"/> <om:featureOfInterest xlink:href="http://www.ga.gov.au/bin/gazd01?rec=293604" xlink:role="urn:ogc:def:featuretype:SEEGRID:locality"/> <om:result> <swe:DataArray gml:id="DA3464"> <swe:elementCount> <swe:Count gml:id="C457"> <swe:value>23</swe:value> </swe:Count> </swe:elementCount> <swe:elementType name="WeatherRecordType" xlink:href="weatherRecord1_t.xml"/> <swe:encoding> <swe:TextBlock decimalSeparator="."

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tokenSeparator="," blockSeparator=" "/> </swe:encoding> <swe:values> 2007‐04‐01T00:00:00.000‐06:00,30.4,28.8,155.8,1055.32,55,haze 2007‐04‐01T00:00:10.000‐06:00,30.4,28.8,155.8,1055.4,59,haze 2007‐04‐01T00:00:20.000‐06:00,30.4,28.8,155.7,1055.47,65,haze 2007‐04‐01T00:00:30.000‐06:00,30.3,28.9,155.7,1055.55,66,haze 2007‐04‐01T00:00:40.000‐06:00,30.3,28.9,155.6,1055.62,61,haze 2007‐04‐01T00:00:50.000‐06:00,30.3,28.9,155.6,1055.69,55,haze 2007‐04‐01T00:01:00.000‐06:00,30.3,28.9,155.5,1055.77,51,haze 2007‐04‐01T00:01:10.000‐06:00,30.2,28.9,155.5,1055.84,48,haze 2007‐04‐01T00:01:20.000‐06:00,30.2,28.9,155.4,1055.91,43,haze 2007‐04‐01T00:01:30.000‐06:00,30.2,28.9,155.4,1055.99,44,haze 2007‐04‐01T00:01:40.000‐06:00,30.2,29,155.3,1056.06,46,haze 2007‐04‐01T00:01:50.000‐06:00,30.1,29,155.3,1056.13,48,haze 2007‐04‐01T00:02:00.000‐06:00,30.1,29,155.2,1056.2,44,haze 2007‐04‐01T00:02:10.000‐06:00,30.1,29,155.2,1056.27,41,haze 2007‐04‐01T00:02:20.000‐06:00,30.1,29,155.1,1056.34,40,haze 2007‐04‐01T00:02:30.000‐06:00,30,29,155.1,1056.41,36,clear 2007‐04‐01T00:02:40.000‐06:00,30,29,155,1056.48,39,clear 2007‐04‐01T00:02:50.000‐06:00,30,29.1,155,1056.55,50,haze 2007‐04‐01T00:03:00.000‐06:00,30,29.1,155,1056.62,65,haze 2007‐04‐01T00:03:10.000‐06:00,30,29.1,154.9,1056.69,70,haze 2007‐04‐01T00:03:20.000‐06:00,29.9,29.1,154.9,1056.76,71,haze 2007‐04‐01T00:03:30.000‐06:00,29.9,29.1,154.8,1056.83,75,haze 2007‐04‐01T00:03:40.000‐06:00,29.9,29.1,154.8,1056.89,75,haze </swe:values> </swe:DataArray> </om:result> </om:OM_Observation>

C.2.6

Observation with complex result – alternative schema for result

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/observation <om:OM_Observation gml:id="obsTest4" xmlns:cv="http://www.opengis.net/cv/0.2/gml32" xmlns:swe="http://www.opengis.net/swe/1.0/gml32" xmlns:om="http://www.opengis.net/om/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd http://www.opengis.net/cv/0.2/gml32 http://bp.schemas.opengis.net/06‐188r2/cv/0.2.2_gml32/cv.xsd"> <gml:description>Observation test instance ‐ multi‐element featureOfInterest </gml:description> <gml:name>Multi‐element 1</gml:name> <om:phenomenonTime> <gml:TimeInstant gml:id="ots1t"> <gml:timePosition>2005‐06‐17</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <om:resultTime xlink:href="#ots1t"/> Copyright © 2011 Open Geospatial Consortium.

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<om:procedure xlink:href="urn:ogc:object:feature:Sensor:NASA:xyz345"/> <om:observedProperty xlink:href="http://sweet.jpl.nasa.gov/2.0/physRadiation.owl#Radiance"/> <om:featureOfInterest xlink:href="http://wfs.example.org?request=getFeature&featureid=stc1"/> <om:result> <cv:CV_DiscreteCoverage gml:id="DC756254"> <cv:domainExtent xlink:href="http://wfs.example.org?request=getFeature&featureid=stc1#xpointer(./boundedBy)"/> <cv:rangeType xlink:href="http://sweet.jpl.nasa.gov/2.0/physRadiation.owl#Radiance"/> <cv:element> <cv:CV_GeometryValuePair> <cv:geometry xlink:href="pixel1"/> <cv:value xsi:type="gml:MeasureType" uom="uV">10.1</cv:value> </cv:CV_GeometryValuePair> </cv:element> <cv:element> <cv:CV_GeometryValuePair> <cv:geometry xlink:href="pixel2"/> <cv:value xsi:type="gml:MeasureType" uom="uV">15.7</cv:value> </cv:CV_GeometryValuePair> </cv:element> <cv:element> <cv:CV_GeometryValuePair> <cv:geometry xlink:href="pixel3"/> <cv:value xsi:type="gml:MeasureType" uom="uV">20.2</cv:value> </cv:CV_GeometryValuePair> </cv:element> <cv:element> <cv:CV_GeometryValuePair> <cv:geometry xlink:href="pixel4"/> <cv:value xsi:type="gml:MeasureType" uom="uV">27.5</cv:value> </cv:CV_GeometryValuePair> </cv:element> </cv:CV_DiscreteCoverage> </om:result> </om:OM_Observation>

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C.2.7

Observation with spatial location indicated in a parameter

This observation type is provided to support spatial filtering in SOS applications. Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/spatialObservation <om:OM_Observation gml:id="obsTest1" xmlns:om="http://www.opengis.net/om/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd"> <!‐‐ optional description of observation ‐‐> <gml:description>Spatial observation test instance: water level</gml:description> <!‐‐ optional name of observation ‐‐> <gml:name>Spatial observation test 1</gml:name> <!‐‐ phenomenon time of observation ‐‐> <om:phenomenonTime> <gml:TimeInstant gml:id="pt1"> <gml:timePosition>2010‐03‐08T16:22:25.00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <!‐‐ result time is same as phenomenon time of observation ‐‐> <om:resultTime xlink:href="#pt1"/> <!‐‐ link to DescribeSensor operation of SOS which is providing the sensor description ‐‐> <om:procedure xlink:href="http://mySOSURL?service=SOS&request=DescribeSensor&version=2.0.0&procedureI dentifier="procedure1"/> <!‐‐ parameter containing samplingPoint as defined in SOS 2.0 Extension ‐ Data Encoding Restriction‐‐> <om:parameter> <om:NamedValue> <om:name xlink:href="http://www.opengis.net/def/param‐name/OGC‐OM/2.0/samplingGeometry"/> <om:value> <gml:Point gml:id="SamplingPoint"> <gml:pos srsName="urn:ogc:def:crs:EPSG:4326">52.9 7.52</gml:pos> </gml:Point> </om:value> </om:NamedValue> </om:parameter> <!‐‐ a notional URN identifying the observed property ‐‐> <om:observedProperty xlink:href="http://sweet.jpl.nasa.gov/2.0/hydroSurface.owl#WaterHeight"/> <!‐‐ a notional WFS call identifying the object regarding which the observation was made ‐‐> <om:featureOfInterest xlink:href="http://wfs.example.org?request=getFeature&featureid=river1 "/> Copyright © 2011 Open Geospatial Consortium.

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<!‐‐ The XML Schema type of the result is indicated using the value of the xsi:type attribute ‐‐> <om:result xsi:type="gml:MeasureType" uom="cm">28</om:result> </om:OM_Observation>

C.3 Spatial sampling features C.3.1

Sampling Point

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/samplingPoint <sams:SF_SpatialSamplingFeature gml:id="st2" xmlns:sf="http://www.opengis.net/sampling/2.0" xmlns:sams="http://www.opengis.net/samplingSpatial/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/samplingSpatial/2.0 http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplingFeature.xsd"> <gml:description>Hydrology sampling station</gml:description> <gml:name codeSpace="http://my.hydrology.example.org/catchments/Potamos">st2</gml:name> <sf:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐OM/2.0/SF_SamplingPoint"/> <sf:sampledFeature xlink:href="http://my.hydrology.example.org/catchments/Potamos"/> <sf:relatedObservation xlink:href="http://my.hydrology.example.org/chemistry/2007/rtg78n"/> <sf:relatedObservation xlink:href="http://my.hydrology.example.org/chemistry/2007/rtg108q"/> <sf:relatedSamplingFeature> <sf:SamplingFeatureComplex> <sf:role xlink:href="http://www.example.org/complex/member"/> <sf:relatedSamplingFeature xlink:href="http://my.example.org/wfs?request=getFeature;featureid=coll32"/> </sf:SamplingFeatureComplex> </sf:relatedSamplingFeature> <sams:shape> <gml:Point gml:id="st2p"> <gml:pos srsName="urn:ogc:def:crs:EPSG:6.8:4283">‐30.711 134.205</gml:pos> </gml:Point> </sams:shape> </sams:SF_SpatialSamplingFeature>

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C.3.2

Sampling Curve with metadata

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/samplingCurve <sams:SF_SpatialSamplingFeature gml:id="pr1" xmlns:sams="http://www.opengis.net/samplingSpatial/2.0" xmlns:sam="http://www.opengis.net/sampling/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gmd="http://www.isotc211.org/2005/gmd" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/samplingSpatial/2.0 http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplingFeature.xsd"> <gml:description>Geology traverse</gml:description> <gml:name codeSpace="http://my.geology.example.org/projects/2007">pr1</gml:name> <gml:boundedBy> <gml:Envelope srsName="urn:ogc:def:crs:EPSG:6.8:4283"> <gml:lowerCorner>‐30.711 134.196</gml:lowerCorner> <gml:upperCorner>‐30.702 134.205</gml:upperCorner> </gml:Envelope> </gml:boundedBy> <sam:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐OM/2.0/SF_SamplingCurve"/> <sam:sampledFeature xlink:href="http://my.geology.example.org/unit/g345"/> <sam:lineage> <gmd:LI_Lineage> <gmd:statement> <CharacterString xmlns="http://www.isotc211.org/2005/gco"> elevation and position obtained using http://my.geology.example.org/procedures/survey/position/GPS4 </CharacterString> </gmd:statement> </gmd:LI_Lineage> </sam:lineage> <sams:positionalAccuracy> <gmd:DQ_AbsoluteExternalPositionalAccuracy> <gmd:nameOfMeasure> <CharacterString xmlns="http://www.isotc211.org/2005/gco">horizontal accuracy</CharacterString> </gmd:nameOfMeasure> <gmd:result> <gmd:DQ_QuantitativeResult> <gmd:valueUnit xlink:href="urn:ogc:def:UCUM::m"/> <gmd:value> <Record xmlns="http://www.isotc211.org/2005/gco">3.</Record> </gmd:value> </gmd:DQ_QuantitativeResult> </gmd:result> </gmd:DQ_AbsoluteExternalPositionalAccuracy> </sams:positionalAccuracy> <sams:positionalAccuracy> <gmd:DQ_AbsoluteExternalPositionalAccuracy> <gmd:nameOfMeasure> Copyright © 2011 Open Geospatial Consortium.

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<CharacterString xmlns="http://www.isotc211.org/2005/gco">elevation accuracy</CharacterString> </gmd:nameOfMeasure> <gmd:result> <gmd:DQ_QuantitativeResult> <gmd:valueUnit xlink:href="urn:ogc:def:UCUM::m"/> <gmd:value> <Record xmlns="http://www.isotc211.org/2005/gco">10.</Record> </gmd:value> </gmd:DQ_QuantitativeResult> </gmd:result> </gmd:DQ_AbsoluteExternalPositionalAccuracy> </sams:positionalAccuracy> <sams:shape> <gml:LineString gml:id="pr1_ls1" srsName="urn:ogc:def:crs:EPSG:6.8:4347"> <gml:pos>‐30.711 134.205 321.</gml:pos> <gml:pos>‐30.710 134.204 315.</gml:pos> <gml:pos>‐30.709 134.203 303.</gml:pos> <gml:pos>‐30.708 134.201 296.</gml:pos> <gml:pos>‐30.706 134.196 272.</gml:pos> <gml:pos>‐30.703 134.197 271.</gml:pos> <gml:pos>‐30.702 134.199 280.</gml:pos> </gml:LineString> </sams:shape> </sams:SF_SpatialSamplingFeature>

C.3.3

Sampling feature collection – sampling curve with association stations

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/sampling <sf:SF_SamplingFeatureCollection gml:id="foi" xmlns:sf="http://www.opengis.net/sampling/2.0" xmlns:sams="http://www.opengis.net/samplingSpatial/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/samplingSpatial/2.0 http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplingFeature.xsd"> <gml:description>This collection contains a sampling curve plus some associated stations</gml:description> <gml:boundedBy> <gml:Envelope srsName="urn:ogc:def:crs:EPSG:6.3:62836405"> <gml:lowerCorner>‐90 ‐180</gml:lowerCorner> <gml:upperCorner>90 180</gml:upperCorner> </gml:Envelope> </gml:boundedBy> <sf:member>

OGC 10-025r1

<sams:SF_SpatialSamplingFeature gml:id="ot2s"> <gml:name>8903</gml:name> <sf:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐ OM/2.0/SF_SamplingCurve"/> <sf:sampledFeature xlink:href="http://wfs.flakey.org?request=getFeature&featureid=tract470"/> <sf:relatedSamplingFeature> <sf:SamplingFeatureComplex> <sf:role xlink:href="urn:example:station"/> <sf:relatedSamplingFeature xlink:href="#st1p"/> </sf:SamplingFeatureComplex> </sf:relatedSamplingFeature> <sf:relatedSamplingFeature> <sf:SamplingFeatureComplex> <sf:role xlink:href="urn:example:station"/> <sf:relatedSamplingFeature xlink:href="#st2p"/> </sf:SamplingFeatureComplex> </sf:relatedSamplingFeature> <sf:relatedSamplingFeature> <sf:SamplingFeatureComplex> <sf:role xlink:href="urn:example:station"/> <sf:relatedSamplingFeature xlink:href="#st3p"/> </sf:SamplingFeatureComplex> </sf:relatedSamplingFeature> <sf:relatedSamplingFeature> <sf:SamplingFeatureComplex> <sf:role xlink:href="urn:example:station"/> <sf:relatedSamplingFeature xlink:href="#st4p"/> </sf:SamplingFeatureComplex> </sf:relatedSamplingFeature> <sams:shape> <gml:LineString gml:id="pr1_ls1" srsName="urn:ogc:def:crs:EPSG:6.8:4347"> <gml:pos>‐30.711 134.205 321.</gml:pos> <gml:pos>‐30.710 134.204 315.</gml:pos> <gml:pos>‐30.709 134.203 303.</gml:pos> <gml:pos>‐30.708 134.201 296.</gml:pos> <gml:pos>‐30.706 134.196 272.</gml:pos> <gml:pos>‐30.703 134.197 271.</gml:pos> <gml:pos>‐30.702 134.199 280.</gml:pos> </gml:LineString> </sams:shape> </sams:SF_SpatialSamplingFeature> </sf:member> <sf:member> <sams:SF_SpatialSamplingFeature gml:id="st1"> Copyright © 2011 Open Geospatial Consortium.

OGC 10-025r1

<sf:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐ OM/2.0/SF_SamplingPoint"/> <sf:sampledFeature xlink:href="http://wfs.flakey.org?request=getFeature&featureid=tract470"/> <sams:shape> <gml:Point gml:id="st1p"> <gml:pos>‐30.702 134.199</gml:pos> </gml:Point> </sams:shape> </sams:SF_SpatialSamplingFeature> </sf:member> <sf:member> <sams:SF_SpatialSamplingFeature gml:id="st2"> <sf:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐ OM/2.0/SF_SamplingPoint"/> <sf:sampledFeature xlink:href="http://wfs.flakey.org?request=getFeature&featureid=tract470"/> <sams:shape> <gml:Point gml:id="st2p"> <gml:pos>‐30.710 134.204 315.</gml:pos> </gml:Point> </sams:shape> </sams:SF_SpatialSamplingFeature> </sf:member> <sf:member> <sams:SF_SpatialSamplingFeature gml:id="st3"> <sf:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐ OM/2.0/SF_SamplingPoint"/> <sf:sampledFeature xlink:href="http://wfs.flakey.org?request=getFeature&featureid=tract470"/> <sams:shape> <gml:Point gml:id="st3p"> <gml:pos>‐30.709 134.203 303.</gml:pos> </gml:Point> </sams:shape> </sams:SF_SpatialSamplingFeature> </sf:member> <sf:member> <sams:SF_SpatialSamplingFeature gml:id="st4"> <sf:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐ OM/2.0/SF_SamplingPoint"/> <sf:sampledFeature

OGC 10-025r1

xlink:href="http://wfs.flakey.org?request=getFeature&featureid=tract470"/> <sams:shape> <gml:Point gml:id="st4p"> <gml:pos>‐30.708 134.201 296.</gml:pos> </gml:Point> </sams:shape> </sams:SF_SpatialSamplingFeature> </sf:member> </sf:SF_SamplingFeatureCollection>

C.3.4

Sampling curve with embedded observations

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/samplingCurve <sams:SF_SpatialSamplingFeature gml:id="b1" xmlns:swe="http://www.opengis.net/swe/2.0" xmlns:om="http://www.opengis.net/om/2.0" xmlns:sams="http://www.opengis.net/samplingSpatial/2.0" xmlns:sam="http://www.opengis.net/sampling/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:cv="http://www.opengis.net/cv/0.2/gml32" xsi:schemaLocation="http://www.opengis.net/swe/2.0 http://schemas.opengis.net/sweCommon/2.0/swe.xsd http://www.opengis.net/cv/0.2/gml32 http://bp.schemas.opengis.net/06‐188r2/cv/0.2.2_gml32/cv.xsd http://www.opengis.net/om/2.0 http://schemas.opengis.net/om/2.0/observation.xsd http://www.opengis.net/samplingSpatial/2.0 http://schemas.opengis.net/samplingSpatial/2.0/spatialSamplingFeature.xsd"> <gml:description>Geology borehole Encoded as a SamplingCurve With three logs encoded as the results of relatedObservations</gml:description> <gml:name codeSpace="http://my.geology.custodian.org/projects/2007">b1</gml:name> <gml:boundedBy> <gml:Envelope srsName="urn:ogc:def:crs:EPSG:6.8:4283"> <!‐‐ 2D CRS ‐‐> <gml:lowerCorner>‐30.7117 134.2053</gml:lowerCorner> <gml:upperCorner>‐30.7111 134.2059</gml:upperCorner> </gml:Envelope> </gml:boundedBy> <sam:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐OM/2.0/SF_SamplingCurve"/> <sam:sampledFeature xlink:href="http://my.geology.custodian.org/unit/g345"/> <sam:relatedObservation> <om:OM_Observation gml:id="b1_lith1"> <gml:description>Lithology log Result is encoded using OGC Discrete Coverage/interleaved pattern</gml:description> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐ OM/2.0/OM_DiscreteCoverageObservation"/> <om:phenomenonTime> <gml:TimeInstant gml:id="T3247149"> Copyright © 2011 Open Geospatial Consortium.

OGC 10-025r1

<gml:timePosition>2007‐06‐06T17:20:30.00+08:00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <om:resultTime xlink:href="#T3247149"/> <om:procedure xlink:href="http://www.csiro.au/people/ps205.html"/> <om:observedProperty xlink:href="urn:ogc:def:phenomenon:CGI:2007:lithology"/> <om:featureOfInterest xlink:href="../../../.."/> <om:result> <cv:CV_DiscreteCoverage gml:id="CV12415"> <cv:domainExtent xlink:href="#b1_ls1"/> <cv:rangeType xlink:href="urn:ogc:def:phenomenon:CGI:2007:lithology"/> <cv:element> <cv:CV_GeometryValuePair> <cv:geometry> <cv:CV_DomainObject> <cv:spatialElement> <gml:LineString gml:id="ls91826" srsName="#b1_ls1" srsDimension="1"> <!‐‐ positions given in 1D CRS defined by borehole shape ‐‐> <gml:pos>0.0</gml:pos> <gml:pos>5.6</gml:pos> </gml:LineString> </cv:spatialElement> </cv:CV_DomainObject> </cv:geometry> <cv:value xsi:type="gml:CodeType" codeSpace="http://www.cgi‐ iugs.org/geoSciML/vocabulary/lithology/2007">Laterite</cv:value> </cv:CV_GeometryValuePair> </cv:element> <cv:element> <cv:CV_GeometryValuePair> <cv:geometry> <cv:CV_DomainObject> <cv:spatialElement> <gml:LineString gml:id="ls91827" srsName="#b1_ls1" srsDimension="1"> <gml:pos>5.6</gml:pos> <gml:pos>35.0</gml:pos> </gml:LineString> </cv:spatialElement> </cv:CV_DomainObject> </cv:geometry> <cv:value xsi:type="gml:CodeType" codeSpace="http://www.cgi‐

OGC 10-025r1

iugs.org/geoSciML/vocabulary/lithology/2007">Granite</cv:value> </cv:CV_GeometryValuePair> </cv:element> <cv:element> <cv:CV_GeometryValuePair> <cv:geometry> <cv:CV_DomainObject> <cv:spatialElement> <gml:LineString gml:id="ls91828" srsName="#b1_ls1" srsDimension="1"> <gml:pos>35.6</gml:pos> <gml:pos>55.0</gml:pos> </gml:LineString> </cv:spatialElement> </cv:CV_DomainObject> </cv:geometry> <cv:value xsi:type="gml:CodeType" codeSpace="http://www.cgi‐ iugs.org/geoSciML/vocabulary/lithology/2007">Dacite</cv:value> </cv:CV_GeometryValuePair> </cv:element> </cv:CV_DiscreteCoverage> </om:result> </om:OM_Observation> </sam:relatedObservation> <sam:relatedObservation> <om:OM_Observation gml:id="b1_ms1"> <gml:description>Magnetic susceptibility log Result is encoded using SWE Common "DataArray" element, which embeds values in a text string</gml:description> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐OM/2.0/SWEObservation"/> <om:phenomenonTime> <gml:TimeInstant gml:id="T13411414"> <gml:timePosition>2007‐06‐06T14:20:30.00+08:00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <om:resultTime xlink:href="#T13411414"/> <om:procedure xlink:href="http://www.geophysics.org/MS34"/> <om:observedProperty xlink:href="urn:ogc:def:phenomenon:CGI:2007:MagneticSusceptibility"/> <om:featureOfInterest xlink:href="../../../.."/> <om:result> <swe:DataArray gml:id="DA1412412"> <swe:elementCount> <swe:Count gml:id="C346373"> <swe:value>5</swe:value> </swe:Count> </swe:elementCount> <swe:elementType name="MagSusElement"> Copyright © 2011 Open Geospatial Consortium.

OGC 10-025r1

<swe:DataRecord gml:id="DR12412414"> <swe:field name="offset"> <swe:Quantity definition="urn:ogc:def:phenomenon:CGI:2007:offset" gml:id="Q23525"> <swe:uom xlink:href="urn:ogc:def:uom:UCUM:m"/> </swe:Quantity> </swe:field> <swe:field name="MagSus"> <swe:Quantity definition="urn:ogc:def:phenomenon:CGI:2007:MagneticSusceptibility" gml:id="Q1231421"> <swe:uom xlink:href="urn:ogc:def:uom:UCUM:1"/> </swe:Quantity> </swe:field> </swe:DataRecord> </swe:elementType> <swe:encoding> <swe:TextEncoding decimalSeparator="." tokenSeparator="," blockSeparator=" "/> </swe:encoding> <swe:values> 1.0,0.0568 2.0,0.2568 3.0,0.3568 4.0,0.3578 5.0,0.3597 </swe:values> </swe:DataArray> </om:result> </om:OM_Observation> </sam:relatedObservation> <sam:relatedObservation> <om:OM_Observation gml:id="b1_p1"> <gml:description>Porosity log Result is encoded using OGC Discrete Point Coverage/interleaved pattern</gml:description> <om:type xlink:href="http://www.opengis.net/def/observationType/OGC‐ OM/2.0/OM_DiscretePointCoverageObservation"/> <om:phenomenonTime> <gml:TimeInstant gml:id="T9897"> <gml:timePosition>2007‐06‐06T14:20:30.00+08:00</gml:timePosition> </gml:TimeInstant> </om:phenomenonTime> <om:resultTime xlink:href="#T9897"/> <om:procedure xlink:href="http://www.geophysics.org/MS34"/> <om:observedProperty xlink:href="http://sweet.jpl.nasa.gov/ontology/property.owl#Porosity"/> <om:featureOfInterest xlink:href="../../../.."/> <om:result>

OGC 10-025r1

<cv:CV_DiscretePointCoverage gml:id="CV123476"> <cv:domainExtent xlink:href="#b1_ls1"/> <cv:rangeType xlink:href="http://sweet.jpl.nasa.gov/ontology/property.owl#Porosity"/> <cv:element> <cv:CV_PointValuePair> <cv:geometry> <gml:Point srsName="#b1_ls1" srsDimension="1" gml:id="P342343"> <gml:pos>1.0</gml:pos> </gml:Point> </cv:geometry> <cv:value xsi:type="gml:MeasureType" uom="1">0.0568</cv:value> </cv:CV_PointValuePair> </cv:element> <cv:element> <cv:CV_PointValuePair> <cv:geometry> <gml:Point srsName="#b1_ls1" srsDimension="1" gml:id="P23144"> <gml:pos>2.0</gml:pos> </gml:Point> </cv:geometry> <cv:value xsi:type="gml:MeasureType" uom="1">0.0068</cv:value> </cv:CV_PointValuePair> </cv:element> <cv:element> <cv:CV_PointValuePair> <cv:geometry> <gml:Point srsName="#b1_ls1" srsDimension="1" gml:id="P737643"> <gml:pos>3.0</gml:pos> </gml:Point> </cv:geometry> <cv:value xsi:type="gml:MeasureType" uom="1">0.08</cv:value> </cv:CV_PointValuePair> </cv:element> </cv:CV_DiscretePointCoverage> </om:result> </om:OM_Observation> </sam:relatedObservation> <sams:shape> <gml:LineString gml:id="b1_ls1" srsName="urn:ogc:def:crs:EPSG:6.8:4347"> <!‐‐ 3D CRS ‐‐> Copyright © 2011 Open Geospatial Consortium.

OGC 10-025r1

<gml:pos>‐30.7111 134.2059 321.</gml:pos> <gml:pos>‐30.7112 134.2058 315.</gml:pos> <gml:pos>‐30.7113 134.2057 303.</gml:pos> <gml:pos>‐30.7114 134.2056 296.</gml:pos> <gml:pos>‐30.7115 134.2055 272.</gml:pos> <gml:pos>‐30.7116 134.2054 271.</gml:pos> <gml:pos>‐30.7117 134.2053 270.</gml:pos> </gml:LineString> </sams:shape> </sams:SF_SpatialSamplingFeature>

C.4 Specimens

Conforms to http://www.opengis.net/spec/OMXML/2.0/conf/specimen <sp:SF_Specimen gml:id="pr1_s2" xmlns:sf="http://www.opengis.net/sampling/2.0" xmlns:sp="http://www.opengis.net/samplingSpecimen/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema‐instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml/3.2" xsi:schemaLocation="http://www.opengis.net/samplingSpecimen/2.0 http://schemas.opengis.net/samplingSpecimen/2.0/specimen.xsd"> <gml:description>Rock sample collected on traverse</gml:description> <gml:name codeSpace="http://my.geology.example.org/samples/2007">pr1_s2</gml:name> <sf:type xlink:href="http://www.opengis.net/def/samplingFeatureType/OGC‐OM/2.0/SF_Specimen"/> <sf:sampledFeature xlink:href="http://my.geology.example.org/unit/g345"/> <sf:relatedSamplingFeature> <sf:SamplingFeatureComplex> <sf:role xlink:href="http://www/example/org/sampling/parentSpecimen"/> <sf:relatedSamplingFeature xlink:href="http://my.geology.example.org/projects/2007/pr1_s1"/> </sf:SamplingFeatureComplex> </sf:relatedSamplingFeature> <sp:materialClass xlink:href="http://www.opengis.net/def/material/OGC‐OM/2.0/rock"/> <sp:samplingTime> <gml:TimeInstant gml:id="pr1_s2_t"> <gml:timePosition>2007‐01‐29T12:19:55.00+09:00</gml:timePosition> </gml:TimeInstant> </sp:samplingTime> <sp:samplingMethod xlink:href="http://geochemistry.example.org/splits/biased/density/greaterThan/2.9"/> <sp:samplingLocation> <gml:Point gml:id="pr1_s2_p"> <gml:pos srsName="http://www.opengis.net/def/crs/EPSG/0/4347">‐30.706 134.196 272.</gml:pos> </gml:Point> </sp:samplingLocation>

OGC 10-025r1

<sp:currentLocation xlink:href="http://www.opengis.net/def/nil/OGC‐OM/2.0/destroyed"/> </sp:SF_Specimen>

OGC 10-025r1

Document revision history Date

Release

Author

Paragraph modified

Description

2010-02-17 0.1

Simon Cox

All

2010-02-24 0.2

Simon Cox

2010-04-21 0.3

Simon Cox

Most

Reformatted requirements and conformance tests in tabular form to match Modular Spec principles

2010-04-27 0.4

Simon Cox, Christof Stasch

Table1. Clause 7, Annex A

Added SpatialObservation; modified URIs to match proposed hierarchical scheme; rebuilt internal document links between tests, reqs, classes, etc., added test purposes

2010-05-26 0.5

Simon Cox

6, 7, 8, Annex 1. Remove coverage-observation clauses (pending new A GML Application Schema for Coverages coming out of WCS 2.0 group)

Document created Refactored requirements to reflect different standardization targets

2. Remove specific MIME-type declarations, replace with instruction to use application/gml+xml 3. Add external direct dependencies (on GML, SWE Common, ISO 19139) 2010-06-11 0.6

Simon Cox

Annex C

2010-06-16 0.7

Simon Cox, Alex Robin

6, 7, Annex A Added dependency diagrams. Separated SWE observations into scalar and array classes.

2010-10-13 0.8

Simon Cox

6, 7, Annex A Improved Figure 2. Inserted Table 3. Added shading to Req and Conf tables. Corrected URIs & nits.

2010-10-28 0.9

Simon Cox, Alex Robin, Peter Taylor

7.11, 7.12

2011-01-31 1.0

Simon Various Cox, Carl Reed

Inserted examples

Corrected requirements classes

Clean-up for publication; correct URIs, fix broken links, insert missing dependencies.

Observations and Measurements - XML Implementation (version 2.0) — OGC 10-025r1

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