Best Practices

Documents containing discussion of best practices related to the use and/or implementation of an adopted OGC document and for release to the public. Best Practices Documents are an official position of the OGC and thus represent an endorsement of the content of the paper. Schemas for some of these documents can be at the Best Practices Schema Repository.
Document Title (click to view/download) Version Document # Editor Date
A URN namespace for the Open Geospatial Consortium (OGC)  0.4  07-107r3  Carl Reed 2008-05-02
This document describes a URN (Uniform Resource Name) namespace that is engineered by the Open Geospatial Consortium (OGC) for naming persistent resources published by the OGC. The formal Namespace identifier (NID) is "ogc".
Binary Extensible Markup Language (BXML) Encoding Specification  0.0.8  03-002r9  Craig Bruce 2006-01-18
This OGC Best Practices document specifies a binary encoding format for the efficient representation of XML data, especially scientific data that is characterized by arrays of numbers. This encoding format is applicable to any application that uses XML format.
Cataloguing Earth Observation Products for ebXML Registry Information Model 3.0 based Catalogues
 1.0  10-189r2  Frédéric Houbie; Fabian Skivee 2012-06-12
This OGC® document specifies the Earth Observation Products Extension Package for ebXML Registry Information Model 3.0, based on the [OGC 10-157r1] Earth Observation Metadata profile of Observations and Measurements. It enables CSW-ebRIM catalogues to handle a variety of metadata pertaining to earth observation p/roducts as defined in [OGC 10-157r1]. This proposed application profile document describes model and encodings required to discover, search and present metadata from catalogues of Earth Observation products. The profile presents a minimum specification for catalogue interoperability within the EO domain, with extensions for specific classes of metadata.
Compliance Test Language (CTL) Best Practice  0.6.0  06-126r2  Chuck Morris 2009-07-21
This document establishes Compliance Test Language, an XML grammar for documenting and scripting suites of tests for verifying that an implementation of a specification complies with the specification.
Definition identifier URNs in OGC namespace  1.3  07-092r3  Arliss Whiteside 2009-01-15
This document specifies Universal Resource Names (URNs) in the “ogc” URN namespace to be used for identifying definitions. These definitions include definitions of Coordinate Reference Systems (CRSs) and related objects, as specified in OGC Abstract Specification Topic 2: Spatial referencing by coordinates, plus several other resource types for which standard identifiers are useful in OGC Web Services. This document specifies the formats used by these URNs, including formats that can reference definitions recorded in the EPSG database and by other authorities. This document also specifies URNs for some specific definitions for which OGC is the custodian.
DGIWG WMS 1.3 Profile and systems requirements for interoperability for use within a military environment
 0.9.0  09-102  Cyril Minoux 2009-09-02
This document specifies requirements for systems providing maps using OGC Web Map Service. The document defines a profile of OGC WMS 1.3 implementation standard [WMS1.3], a list of normative system requirements and a list of non-normative recommendations. The Defence Geospatial Information Working Group (DGIWG) performed the work as part of through the S05 Web Data Access Service Project of the Services & Interfaces Technical Panel.
EO Product Collection, Service and Sensor Discovery using the CS-W ebRIM Catalogue  1.0  11-035r1  Frédéric Houbie, Steven Smolders 2013-03-26
This is an OGC Best Practice document describing the relations that exist between several metadata conceptual models (EO Product, EO Product Collections, Sensors and Services). The specification of the linking between different artifacts is important for the process of cataloguing and discovering those artifacts.
FGDC CSDGM Application Profile for CSW 2.0
 0.0.12  06-129r1  Patrick Neal, John Davidson, Bruce Westcott 2006-12-26
The OpenGIS® Catalogue Service Interface Standard 2.0.1 - FGDC CSDGM Application Profile for CSW 2.0 explains how Catalogue Services based on the FGDC Content Standard for Digital Geospatial Metadata (CSDGM) [] Application Profile for the OpenGIS® Catalogue Service Interface Standard v2.0.1 [] are organized and implemented for the discovery, retrieval and management of data metadata.
Gazetteer Service - Application Profile of the Web Feature Service Best Practice
wfs gaz ap
 1.0  11-122r1  Panagiotis (Peter) A. Vretanos, Jeff Harrison 2012-02-17
This document defines a Gazetteer Service profile of the OGC Web Feature Service Standard. The OGC Gazetteer Service allows a client to search and retrieve elements of a georeferenced vocabulary of well-known place-names. This profile extends the WFS interface in a way that a client is able to – Determine if a WFS implementation is acting as a Gazetteer Service. – Query the Gazetteer Service in order to retrieve place-name features without closer examination of the feature type definitions – Access metadata about the gazetteer(s) provided by the service – Update place-name features using WFS transactions – Fetch place-name features that have Parent-Child relationships and then follow those links
Gazetteer Service - Application Profile of the Web Feature Service Implementation Specification  0.9.3  05-035r2  Jens Fitzke, Rob Atkinson 2006-07-27
This document defines a Gazetteer Service profile of the OGC Web Feature Service Specification. The OGC Gazetteer Service allows a client to search and retrieve elements of a georeferenced vocabulary of well-known place-names.
GIGAS Methodology for comparative analysis of information and data management systems  0.5.0  10-028r1  Andrea Biancalana, Pier Giorgio Marchetti, Paul Smits 2010-06-04
This document has been written on the basis of a methodology developed within the GIGAS Support Action financed by the European Commission in order to address the convergence of global initiatives like GEOSS and the European interoperability initiatives developed in the context of the GMES programme like HMA - Heterogeneous Missions Accessibility and the INSPIRE spatial data infrastructure legislation.
GML Encoding of Discrete Coverages (interleaved pattern)
 0.2.0  06-188r1  Simon Cox 2007-05-17
This specification describes a GML encoding for discrete coverages. The encoding pattern is a variation from the standard GML Coverage, in that the values in the domain and range are effectively "interleaved" rather than represented as two blocks and encoded sequentially.
GML PIDF-LO Geometry Shape Application Schema for use in the IETF
 0.1.0  06-142r1  Carl Reed, PhD. and Martin Thomson 2007-05-17
This document defines an application schema of the Geography Markup Language (GML) version 3.1.1 for XML encoding of various geometric shapes required in the Presence Information Description Format (IETF RFC 3863) Location Object extension - A Presence-based GEOPRIV Location Object Format (RFC 4119).
Modeling an application domain extension of CityGML in UML  1.0  12-066  Linda van den Brink, Jantien Stoter, Sisi Zlatanova 2014-01-31
This paper presents key aspects of the development of a Dutch 3D standard IMGeo as a CityGML ADE. The new ADE is modeled using UML class diagrams. However the OGC CityGML specification does not provide clear rules on modeling an ADE in UML. This paper describes how the extension was built, which provides general insight how CityGML can be extended for a specific applications starting from the UML diagrams. Several alternatives for modeling ADEs in UML have been investigated and compared. The best suited for the 3D standard option is selected and applied. Open issues and challenges are discussed in the conclusions.
OGC Best Practice for Sensor Web Enablement: Provision of Observations through an OGC Sensor Observation Service (SOS)  1.0  13-015  EO2HEAVEN Consortium 2014-02-25
This document comprises experiences and recommendations when using Sensor Web Enablement (SWE) concepts. This document focuses on one basic issue: the provision of observations in an OGC SOS. This includes the definition of a lightweight OGC SOS profile (OGC 11- 169r1), an analysis of and contribution to the specification of the Sensor Observation Service (SOS) 2.0 as well as an approach how the data used within Earth observation (EO) applications can be integrated more easily into SOS instances. These recommendations result from the work performed in 2010-2013 as part of the research project EO2HEAVEN (Earth Observation and Environmental Modelling for the Mitigation of Health Risks), co-funded by the European Commission as part of the 7th Framework Programme (FP7) Environmental theme. EO2HEAVEN contributes to a better understanding of the complex relationships between environmental changes and their impact on human health. See . The lightweight OGC SOS profile has been developed in close cooperation between the FP7 projects EO2HEAVEN and UncertWeb (see ).
OGC Best Practice for using Web Map Services (WMS) with Time-Dependent or Elevation-Dependent Data
 1.0  12-111r1  Marie-Françoise Voidrot-Martinez, Chris Little, Jürgen Seib, Roy Ladner, Adrian Custer, Jeff de La B 2014-04-14
This document proposes a set of best practices and guidelines for implementing and using the Open Geospatial Consortium (OGC) Web Map Service (WMS) to serve maps which are time-dependent or elevation-dependent. In particular, clarifications and restrictions on the use of WMS are defined to allow unambiguous and safe interoperability between clients and servers, in the context of expert meteorological and oceanographic usage and non-expert usage in other communities. This Best Practice document applies specifically to WMS version 1.3, but many of the concepts and recommendations will be applicable to other versions of WMS or to other OGC services, such as the Web Coverage Service.
OGC Download Service for Earth Observation Products Best Practice  1.0  13-043  Daniele Marchionni, Raul Cafini 2014-01-31
This OGC® Best Practices document specifies the interfaces, bindings, requirements, conformance classes for online download of Earth Observation products. This protocol covers several scenarios implemented by European Space Agency - ESA for providing its products to users: 􀀀 The EO Product to be downloaded is already available and can be downloaded as it is. 􀀀 The EO Product is not online available but is stored in a near online archive. 􀀀 The EO Product is advertised in a Catalogue, but it is not physically available and it has to be generated on the fly by a processing facility. 􀀀 The EO product is archived in several distributed online archives and it can be downloaded in parallel. The basic scenarios can be simply supported by Web Browsers, the most complex ones need a dedicated client (download manager) supporting Metalink and multisource download. This Best Practice document has been prepared basing on the work performed in the frame of ESA’s Next Generation Earth Observation user services and it was initially produced during the ESA
OGC RESTful encoding of OGC Sensor Planning Service for Earth Observation satellite Tasking
 1.0  14-012r1  Nicolas FANJEAU, Sebastian ULRICH 2014-07-17
This OGC® Best Practices document specifies the interfaces, bindings, requirements and conformance classes that enable complete workflows for the tasking of sensor planning services for Earth Observation (EO) satellites. In fact it provides the interfaces for supporting the following EO sensor planning scenarios: • Planning future acquisitions with feasibility study, • Direct planning of future acquisitions, • Reservation of planning for future acquisitions. This specification includes a comprehensive list of sensor options and tasking options derived from the parent specification OGC 10-135 [NR22] which gathered inputs from several Satellite Agencies and Operators: • ESA • EUMETSAT • CNES • DLR • CSA • Airbus Defence & Space This document is based on the standard: OGC 10-135, Sensor Planning Service Interface Standard 2.0 Earth Observation Satellite Tasking Extension, version 2.0. 2011. which was initially produced during the ESA HMA (Heterogeneous Missions Accessibility) initiative [OR1] and related projects. With respect to the parent specification this Best Practice document proposes the following changes: • Replaces SOAP with REST for service encoding. This affects not only the way the service is implemented but also the way the standard is presented and described. In fact, basing the standard on REST implies that the service has to be described in terms of resources and methods applied on them whilst in SOAP services, the description is focusing on operations and in fact the OGC 10-135[NR22] is structured in Web Service operations. • Usage of OpenSearch Description Documents as an alternate method for describing sensors and tasking Options (§7.3.2). This specification uses the sensors and tasking options model already described in the OGC 10-135 [NR22] standard but defines an additional method for describing sensors and tasking options within OpenSearch Description Documents based on the OGC 13-039 [NR23]. Actually this part of the specification refers to the OpenSearch Extension for Earth Observation Satellite Tasking.  
OGC RESTful Encoding of Ordering Services Framework For Earth Observation Products  1.0  13-042  Daniele Marchionni 2014-04-28
This OGC Best Practices document specifies the interfaces, bindings, requirements, conformance classes that enable complete workflows for ordering Earth Observation (EO) data products. In fact it provides the interfaces for supporting the following EO Product ordering scenarios: • Ordering products from EO Catalogues • Subscribing to automatic delivery of EO products • Bulk EO Product orders The EO products orders can be delivered on file via different online protocols (e.g. ftp, sftp, ftps, etc.).
OGC User Management Interfaces for Earth Observation Services  1.1  07-118r9  P. Denis, P. Jacques 2014-04-28
This OGC Best Practice describes how user and identity management information may be included in the protocol specifications for OGC Services. The proposed approach is applicable to the orchestration of EO services, to system of systems and federation scenarios. The approach is meant to be independent from the specific OGC service. The use cases potentially addressed are very wide and in general may cover geospatial services and not only EO (Earth Observation) services. The use cases may range from web map, feature or coverage services, web processing services, to catalogue services. Examples of EO specific use cases are: ordering (Ordering Services for Earth Observation Products [OGC 06-141r6]) and feasibility analysis (OpenGIS Sensor Planning Service Application Profile for EO Sensors [OGC 10 135]). The document was initially produced during the ESA HMA (Heterogeneous Missions Accessibility) initiative [OR1] and related projects. This document is not an OGC standard. This document describes how existing specifications from W3C and OASIS can be used in combination to pass identity information to OGC Web services.
OGC® Best Practice for Sensor Web Enablement Lightweight SOS Profile for Stationary In-Situ Sensors  1.0  11-169r1  Simon Jirka, Christoph Stasch, Arne Bröring 2014-02-25
This Best Practice document describes a lightweight SOS 2.0 profile for stationary in-situ sensors. Besides the SOS itself this document also addresses the data formats used by the SOS: Observations & Measurements 2.0 (O&M) for encoding measurement data and the Sensor Model Language 2.0 (SensorML) for encoding metadata. Other SWE standards which provide more specialized functionality are not part of this minimum lightweight SWE profile. The aim of this document is to present a common minimum profile of the SOS. The profile is intended to reduce the complexity of the standard by omitting highly specific elements that are not necessary for the majority of use cases that occur in practice. At the same time, the profile is designed in such a way that all SOS implementations that conform to this profile are also compliant to the according OGC specifications.
OGC® KML Standard Development Best Practices  0.6  08-125r1  Tim Wilson, David Burggraf 2009-02-04
This OGC® Best Practices Document provides guidelines for developing the OGC KML standard in a manner that best serves and supports the KML application developer and user communities. It applies to the extension of KML by application developers and the subsequent enhancement of the KML standard by the OGC.
OGC® Name Type Specification for Coordinate Reference Systems  1.0  11-135r2  Peter Baumann 2013-06-18
This document specifies a Name Type Specification (NTS) for predefined, combined, and parameterized Coordinate Reference System (CRS) definitions. This NTS augments the /def/ namespace with http URI definitions for CRSs. The NTS is based on the Name Type Specification – definitions – part 1 – basic name [OGC 09-048r3] and supersedes OGC document “Definition identifier URNs in OGC name¬space” [OGC 07-092r3]. NTSs are maintained by the OGC Naming Authority (OGC-NA). This document includes one Annex: a user guide to the OGC CRS resolver.
OGC® OpenSearch Extension for Earth Observation Satellite Tasking: Best Practice  1.0  13-039  Nicolas Fanjeau, Sebastian Ulrich 2014-12-29
This document provides a specification of an OpenSearch extension for Earth Observation Satellites Tasking. This OGC Best Practice is intended to provide a very simple way to task Earth Observation (EO) satellites sensors, to allow simple syndication between, and to provide a basic federated query of related sensors, whereby a single client can query several instances and present a collection of future acquisition as one set. This document is the result of work undertaken within the European Space Agency (ESA) Heterogeneous Mission Accessibility for Science (HMA-S) project funded by ESA the Long Term Data Preservation (LTDP) program. The document was initially produced during the ESA HMA (Heterogeneous Missions Accessibility) initiative (see ‘Normative References’ section) related projects.
OGC® Sensor Observation Service 2.0 Hydrology Profile  1.0  14-004r1  Volker Andres, Simon Jirka , Michael Utech 2014-10-20
This OGC document defines an OGC Sensor Observation Service (SOS) 2.0 hydrology profile for SOS 2.0 implementations serving OGC WaterML 2.0. The development of this OGC Best Practice (BP) is based on previous activities and results (i.e. Hydrology Interoperability Experiments[1] as well as the European FP7 project GEOWOW[2]). The work is guided by the need to overcome semantic issues between different SOS instances serving hydrological data and the related client applications. Therefore, this profile focuses on how to use the entities and requests of the standards and defines the necessary technical details to implement the hydrology SOS profile.
OGC® Web Coverage Service 2.0 Primer: Core and Extensions Overview
WCS Primer
 2.0  09-153r1  Peter Baumann 2012-01-25
This document provides an overview on the OGC Web Coverage Service (WCS) 2.0 suite by describing WCS core and extensions. Intended target audience are developers intending to implement WCS servers and/or clients. This document aims at providing an overview and giving useful hints and best practices beyond the pure standards texts. It is a “living document” which will evolve to reflect new developments and best practices. As such, the contents of this document is informative and not of normative nature.
OpenGIS Sensor Planning Service Application Profile for EO Sensors
 0.9.5  07-018r2  Philippe M 2008-01-21
The SPS configuration proposed in this profile is intended to support the programming process of Earth Observation (EO) sensors system. This profile describes a consistent SPS configuration that can be supported by many satellite data providers, most of whom have existing facilities for the management of these programming requests.
OpenGIS Web services architecture description  0.1.0  05-042r2  Arliss Whiteside 2005-11-21
This document summarizes the most significant aspects of the Open Geospatial Consortium (OGC) web services architecture, which the OGC is currently developing. This architecture is a service-oriented architecture, with all components providing one or more services to other services or to clients.
PDF Geo-registration Encoding Best Practice Version 2.2  1.1  08-139r3  George Demmy, Carl Reed 2011-01-17
The intended audience of this document is a developer of software for creating and consuming geo=registered PDF documents that conform to PDF geo-registration 2.2. It specifies how to create the necessary PDF objects that identify a region of the PDF page as a map and describe the map’s coordinate systems. Map creation and rendering to a PDF page are not addressed. The underlying PDF file format is not addressed. The file format is specified in PDF Reference[1] .
Reference Model for the ORCHESTRA Architecture  2.1  07-097  Thomas Uslander (Ed.) 2007-10-05
This document specifies the Reference Model for the ORCHESTRA Architecture (RM-OA). It is an extension of the OGC Reference Model and contains a specification framework for the design of geospatial service-oriented architectures and service networks. The RM-OA comprises the generic aspects of service-oriented architectures, i.e., those aspects that are independent of the risk management domain and thus applicable to other application domains.
Semantic annotations in OGC standards  2.0  08-167r2  Frédéric Houbie, Philippe Duchesne, Patrick Maué 2012-10-10
In this OGC Best Practice, the concept of semantic annotations is introduced. Annotation of Web Services or data compliant to OGC standards refers to the task of attaching meaningful descriptions to the service and the served geospatial data or processes.
Sensor Alert Service  0.9  06-028r3  Ingo Simonis 2007-05-16
The Sensor Alert Service (SAS) can be compared with an event notification system. The sensor node is the object of interest. Each node has to advertise its publications at a SAS (advertise).
Sensor Web Enablement Architecture  0.4.0  06-021r4  Ingo Simonis 2008-08-20
This document describes the architecture implemented by Open Geospatial Consortium’s (OGC) Sensor Web Enablement Initiative (SWE). In contrast to other OGC SWE stan-dards, this document is not an implementation standard.
Summary of the Architecture, Engineering, Construction, Owner Operator Phase 1 (AECOO-1) Joint Testbed  0.3.0  10-003r1  Louis Hecht, Jr., Raj Singh 2010-06-04
The Architecture, Engineering, Construction, Owner Operator, Phase 1 (AECOO-1) Testbed developed and implemented methods to streamline communications between parties in the conceptual design phase to get an early understanding of the tradeoffs between construction cost and energy efficiency. To that end, the project developed the interoperability components required for these analyses in collaborative team settings. These were Information Delivery Manuals (IDMs) for quantity takeoffs and energy analysis business processes, and used these to define Model View Definitions (MVDs)—standards-based subsets of Industry Foundation Classes (IFCs). AECOO-1 was conducted in response the felt need that overall productivity loss and fragmentation in the capital facilities development industries is no longer tolerable. All stakeholders need to practice the best way they know, and practice profitably; software interoperability problems must not hold them back. Non-interoperable software and data is cause for loss of competition across the market.
Unified Geo-data Reference Model for Law Enforcement and Public Safety  1.0  14-106  Carl Reed, Jennifer Harne 2015-01-30
This document provides an overview of the Unified Geo-data Reference Model for Law Enforcement and Public Safety (Unified Model). The Unified Model was originally developed by the GIS Center for Security (GIS CS), Abu Dhabi Police. The GIS CS was initiated based on a UAE Ministry of Interior issued decree to establish GIS CS with the core mission: “To geo-enable police services and applications using International standards and best practices.” In 2010, the GIS SC initiated a program to develop a Standardized GIS Environment (SGA). Part of this effort was to define and implement a standard data model for sharing Law Enforcement and Public Safety data.
Units of Measure Recommendation  1.0  02-007r4  John Bobbitt 2002-08-19
Common semantic for units of measurement to be used across all OGC specifications.
User Management for Earth Observation Services  1.0  07-118r8  P Denis 2010-09-08
This document describes how user and identity management information may be included in the protocol specifications for OGC Services. The use cases addressed will make reference to EO (Earth Observation) services, for example catalogue access (EO Products Extension Package for ebRIM (ISO/TS 15000-3) Profile of CSW 2.0 [OGC 06-131]), ordering (Ordering Services for Earth Observation Products [OGC 06-141r2]) and programming (OpenGIS Sensor Planning Service Application Profile for EO Sensors [OGC 07-018r2]).
WAMI Services: Dissemination Services for Wide Area Motion Imagery - Best Practice  1.0  12-032r2  Rahul Thakkar, Michael Maraist 2012-12-05
This OGC Best Practice (BP) describes web interface specifications for the access and dissemination of Wide Area Motion Imagery (WAMI) products and metadata. This BP also describes a framework and interface specifications common to all WAMI services. A WAMI - Primer has been developed to help you implement this Best Practice.
WaterML-WQ – an O&M and WaterML 2.0 profile for water quality data
 1.0  14-003  Simon J D Cox, Bruce A Simons 2014-12-02
This Best Practice describes how to configure XML documents for single and time series water quality measurements. In addition to stating the rules for using the O&M and WML 2 standards, along with the appropriate content ontologies, this Best Practice provides guidance through examples. This document is intended to complement WaterML 2.0 as part of a suite of standards for water observation data.
Web Map Services - Application Profile for EO Products
 0.3.3  07-063r1  Thomas H.G. Lankester 2009-11-05
This OGC document specifies a constrained, consistent interpretation of the WMS specification that is applicable to government, academic and commercial providers of EO products.
Web Notification Service  0.0.9  06-095  Ingo Simonis, Johannes Echterhoff 2007-01-25
A service by which a client may conduct asynchronous dialogues (message interchanges) with one or more other services. This service is useful when many collaborating services are required to satisfy a client request, and/or when significant delays are involved is satisfying the request. This service was defined under OWS 1.2 in support of SPS operations. WNS has broad applicability in many such multi-service applications. It is now used in several SWE scenarios.