OGC Requests

OGC Seeks Comment on Geography Markup Language 3.3 Standard

Status: 
Please note: This Request is closed. The documents listed below have been adopted by the OGC Technical and Planning Committee. These specifications are under control of the Standards Working Group and will be released after the edits and revisions. For the most current version please check our Standards Page.
Description: 

The Open Geospatial Consortium (OGC®) seeks public comment on the candidate version 3.3 of the OGC Geography Markup Language (GML). GML 3.3 builds on GML 3.2.1, published by ISO as ISO 19136:2007, and extends GML with additional schema components based on requirements requested by various domains of interest. For example, the 3d modeling community suggest the addition of triangular meshes (TINs) to GML. GML 3.3 is fully backwards compatible with GML 3.2.

GML defines an XML data encoding for geographic data and a grammar to express models of such data using XML Schema. GML has come into wide use since it was first adopted as an OGC standard in 2001 (http://www.ogcnetwork.net/gmlprofiles for examples). GML is the standard that enables information communities and other standards organizations such as the Internet Engineering Task Force (IETF) and OASIS to insert geospatial elements into their standards and be confident that their standards will be compatible with mainstream information infrastructure methods of conveying spatial/temporal information.

Some of the changes between the previous version 3.2.1 and 3.3 are:

  • Support for additional date representations based on ISO 8601 (Representation of dates and times)
  • Support for an additional, compact encoding of commonly used geometry types
  • Support for a new encoding of Triangulated Irregular Networks (TINs)
  • Support for Linear Referencing
  • Extensions to the XML encoding rule
  • Support for grids used by the meteorological and ocean observation communities

All extensions are made in separate XML namespaces to support a modular use of components from the GML schema.

Information on the change requests addressed in GML v3.3 can be found athttp://external.opengeospatial.org/twiki_public/GML/ChangeRequests. The candidate OGC GML v3.3 Standard documents are available for review and comment below.

Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] lists.opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC Seeks Comments on "NIL Extension" to Geography Markup Language (GML)

Status: 
Please note: This Request is closed. The documents listed below have been adopted by the OGC Technical and Planning Committee. These specifications are under control of the Standards Working Group and will be released after the edits and revisions. For the most current version please check our Standards Page.
Closing Date: 
Fri, 11/23/2012 - 05:00
Description: 

The Open Geospatial Consortium (OGC®) seeks public comment on the candidate "GML-NIL profile" of the OGC Geography Markup Language (GML) Encoding standard. GML is a widely used XML grammar for encoding information about geographical features. The GML-NIL profile provides a way to allow data providers to make a best effort to supply data according to an application schema, even if they do not have values for all feature properties. This is achieved by marking the application schema as a whole as ‘nillable=true’ and using OGC ‘nil’ URIs in links for missing data. This reverses the usual pattern which has a default value of nillable=false.   

 

The GML-NIL pattern of use has been used informally for several years in Earth and environmental science applications, and this candidate standard merely aims to formalize and document the practice. It is expected to be useful in many applications where a heterogeneous community wishes to enable participation by a wide variety of members with different capabilities and data sources. The submission team is composed of members of the GeoSciML project.

 

The candidate OGC GML-NIL standard documents are available for review and comment below.

Downloads: 


 Nillable GML (12-110)   

 



Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] lists.opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC Seeks Comments on Candidate GeoAPI 3.0 Interface Standard

Status: 
Please note: This Request is scheduled to close on 1 May 2010.
Description: 

The Open Geospatial Consortium, Inc. (OGC®) seeks public comment on the candidate OGC GeoAPI 3.0 Application Programming Interface.

The GeoAPI standard provides a set of Java language interfaces based on the ISO 19100 series of geospatial abstract models for metadata and feature geometry as well as two OGC Abstract Specifications for metadata and coordinate reference systems. In addition to producing this set of Java language interfaces, the OGC GeoAPI 3.0 Standards Working Group is producing a test suite through which developers implementing the Java interfaces can test their implementations.

The GeoAPI project emerges from the earlier OGC Geographic Objects effort and is the result of the collaboration of participants from various institutions and software communities. The GeoAPI project's goal is to provide a set of interfaces in the Java language to help software projects produce high quality geospatial software. This work is not expected to cover all OGC standards.

The candidate OGC GeoAPI 3.0 Interface Standard and information on submitting comments on this document are available below. The public comment period closes on 1 May 2010.

 

Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC Seeks Comments on Candidate XML Standard for Encoding Observations & Measurements

Status: 
Please note: This Request is scheduled to close on August 7th, 2010.
Description: 

The Open Geospatial Consortium, Inc. (OGC®) Members are seeking comments on the “Observations and Measurements – XML Implementation” candidate standard. This candidate standard specifies an XML encoding for the Observations and Measurements conceptual model.

 The Observations and Measurements (O&M) conceptual model, a joint OGC and ISO standard, provides the theoretical basis for an abstract model encoding for observations and provides support for common sampling strategies. O&M also provides a general framework for systems that deal in technical measurements in science and engineering.

 The candidate OMXML standard and other standards that have resulted from the OGC's Sensor Web Enablement (SWE) effort (http://www.opengeospatial.org/ogc/markets-technologies/swe) enable developers to make all types of sensors, transducers and sensor data repositories discoverable, accessible and useable via the Web.

 The candidate OGC Observations and Measurements – XML Implementation Encoding Standard and information on submitting comments on this document are available at http://www.opengeospatial.org/standards/requests/68. The public comment period closes on August 7th, 2010.

Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC seeks comments on Climate and Forecast (CF) extension to NetCDF Core data model standard

Status: 
Please note: This Request is closed. The documents listed below have been adopted by the OGC Technical and Planning Committee. These specifications are under control of the Standards Working Group and will be released after the edits and revisions. For the most current version please check our Standards Page.>
Closing Date: 
Fri, 09/21/2012 - 04:00
Description: 

The Open Geospatial Consortium (OGC®) membership seeks comments on an OGC candidate standard, the CF-netCDF Data Model extension to the existing OGC Network Common Data Form (netCDF) Core Encoding Standard version 1.0. 

The CF-netCDF Data Model is a flexible data model widely used in climate and weather forecast systems as well as for other types of environmental data. The candidate CF-netCDF Data Model extension to the existing OGC Network Common Data Form (netCDF) Core Encoding Standard version 1.0 is the latest step in establishing CF-netCDF as an OGC standard for binary encoding.  This will enable standard delivery of data in binary form via several OGC service interface standards.

The OGC netCDF encoding supports electronic encoding of geospatial data, specifically digital geospatial information representing space- and time-varying phenomena. NetCDF (network Common Data Form) is widely used internationally to communicate and store many kinds of multidimensional data, although it was originally developed for the Earth science community.  The netCDF data model is particularly well suited to providing data in forms familiar to atmospheric and oceanic scientists: namely, as sets of related arrays. 

The conventions for climate and forecast (CF) metadata are designed to promote the processing and sharing of files created with the netCDF API.  The conventions define metadata that provide a definitive description of what the data in each variable represents, and the spatial and temporal properties of the data. This enables users of data from different sources to decide which quantities are comparable, and facilitates building applications with powerful extraction, regridding, and display capabilities.

NetCDF was developed and is maintained and actively supported by the University Corporation for Atmospheric Research (UCAR) (www.ucar.edu). UCAR and other OGC members introduced the first netCDF specification as a candidate OGC standard to encourage broader international use and greater interoperability among clients and servers interchanging data in binary form. 

The candidate CF-netCDF Data Model extension to the existing OGC Network Common Data Form (netCDF) Core Encoding Standard version 1.0 and information about submitting comments on this document are available below. The public comment period closes on September 21, 2012.

Downloads: 
Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] lists.opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC Seeks Comments on GeoServices REST API Candidate Standard

Status: 
Please note: This Request is closed.
Closing Date: 
Sat, 08/18/2012 - 04:00
Description: 

The Open Geospatial Consortium (OGC®) seeks public comment on the candidate OGC GeoServices REST API standard. The GeoServices REST Application Programming Interface (API) provides a standard way for web clients to communicate with geospatial technologies, such as Geographic Information System (GIS) servers, based on Representational State Transfer (REST) principles.

Using this API, clients, such as a web browser application, issue requests to resources on the server identified by structured Uniform Resource Locators (URLs). The server responds with map images, text-based location details or other representations of geospatial information.  From a services perspective the API offers a mechanism to interact with map, image and feature services and perform geospatial analysis. This JavaScript Object Notation (JSON)-based, RESTful API is intended to make implementing servers instantly usable by developers working with widely used REST-based scripting and programming languages, as well as mobile platforms. End users can then use these developers' Web applications to discover and access the services and use them in their workflows.

In early 2011, Esri contacted the Open Geospatial Consortium about submitting the GeoServices Rest API as a candidate OGC standard. The API was initially developed by Esri and implemented on the ArcGIS for Server platform. This submission was approved through the OGC process and then a Standards Working Group (SWG), composed of many OGC members, performed a detailed review and rewrote the API as an OGC interface standard, removing Esri-specific software references. The OGC’s adoption of this candidate standard will provide the wider Web developer community with additional standards-based choices for leveraging geospatial information.

The candidate OGC GeoServices REST API standard documents are available for review and comment below:

Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] lists.opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC Seeks Comments on Modular, GML-based Web Coverage Service 2.0

Status: 
Please note: This Request is scheduled to close on 14 April 2010.
Description: 

The Open Geospatial Consortium, Inc. (OGC®) seeks public comment on the draft OGC Web Coverage Services (WCS) Interface Standard Version 2.0.  The OGC WCS standard supports electronic retrieval of geospatial data as "coverages" - that is, digital geospatial information representing space/time-varying phenomena such as satellite imagery or digital elevation models. The WCS 2.0 draft has several significant enhancements over previous versions. WCS 2.0 is harmonized with the Geography Markup Language coverage model, leading to increased interoperability across OGC standards. Further, WCS 2.0 is highly modular and follows the core/extension design pattern, which allows for standard that is easier to understand and implement.

The WCS standard defines a standard interface and operations that enable interoperable access to single or multi-dimensional geospatial coverages.  Services implementing this standard provide an interface with a standard set of operations for accessing original or derived sets of geospatial coverage information. An important aspect of the WCS standard is that it allows access and retrieval of raw, unprocessed imagery, which is often required by rendering and processing services. Further information about WCS can be found at the WCS Service page ( http://www.ogcnetwork.net/wcs ) of the OGC Network.

The proposed OGC WCS 2.0 standard and information on submitting comments on this document are available below. The public comment period closes on 14 April 2010.

Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template.

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OGC Requests: 

OGC Seeks Comments on MovingObjectSnapshot Standard

Status: 
Please note: This Request is scheduled to close on August 23rd, 2010.
Description: 

The Open Geospatial Consortium, Inc. (OGC®) is seeking public comment on a Geography Markup Language (GML) XML encoding for describing the characteristics of a moving object, such as a GPS enabled car. This candidate standard provides a way of describing in simple terms the motion of an object, such as a car driving through city streets or a person walking in a park.

This candidate standard fills a need for “lightweight” packets of tracking information, such as direction and velocity, that can be communicated between diverse platforms and applications supporting mobile location-aware devices. The GML encoding used in this candidate standard  is compatible with a wide range of other standard encodings used in other communities, such as emergency services.

The candidate standard and information on submitting comments on this document are available at http://www.opengeospatial.org/standards/requests/69. The public comment period closes on August 23rd, 2010. 

Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC Seeks Comments on NetCDF Climate and Forecast Data Encoding Standards

Status: 
Please note: This Request is scheduled to close on 7 October, 2010.
Description: 

The Open Geospatial Consortium (OGC®) members are seeking comments on three candidate standards – the OGC CF-netCDF Primer, OGC Network Common Data Form (NetCDF) Core Encoding Standard, and the OGC NetCDF Binary Encoding Extension Standard - NetCDF Classic and 64-bit Offset Format.


NetCDF (network Common Data Form) is comprised of a data model for array-oriented scientific data, related access libraries, and a machine-independent data format. Together, the interfaces, libraries, and format support the creation, access, and sharing of georeferenced scientific data.


NetCDF and CF-NetCDF were developed by the weather and climate communities and have been maintained by the University Corporation for Atmospheric Research (UCAR) (www.ucar.edu).  These standards has been formally recognized by US Government standards bodies. UCAR introduced NetCDF into the OGC as a candidate OGC standard to encourage broader international use and greater interoperability among clients and servers interchanging data in binary form. Establishing CF-netCDF as an OGC standard for binary encoding will enable standard delivery of data in binary form via several OGC service interface standards, including the OGC Web Coverage Service (WCS), Web Feature Service (WFS), and Sensor Observation Service (SOS) Interface Standards.


The following organizations submitted these candidate standards to the Open Geospatial Consortium:

IMAA-CNR Italy

METEO-FRANCE

Natural Environment Research Council (NERC)

Northrop Grumman Corporation

University Corporation for Atmospheric Research (UCAR)

US National Oceanic and Atmospheric Administration (NOAA)


The candidate OGC OGC standards and information about submitting comments on this document are available below. The public comment period closes on 7 October , 2010.

Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

OGC Seeks Comments on NetCDF Enhanced Data Model Extension Standard

Status: 
Please note: This Request is closed. The documents listed below have been adopted by the OGC Technical and Planning Committee. These specifications are under control of the Standards Working Group and will be released after the edits and revisions. For the most current version please check our Standards Page.
Description: 

The Open Geospatial Consortium (OGC®) membership seeks comments on an OGC candidate standard, the Network Common Data Form (NetCDF) NetCDF Enhanced Data Model Extension Encoding Standard. This document specifies an extension to the existing OGC Network Common Data Form (NetCDF) Core Encoding Standard version 1.0.

The OGC netCDF encoding supports electronic encoding of geospatial data, specifically digital geospatial information representing space- and time-varying phenomena. NetCDF (network Common Data Form) is widely used internationally to communicate and store many kinds of multidimensional data, although it was originally developed for the Earth science community. The netCDF data model is particularly well suited to providing data in forms familiar to atmospheric and oceanic scientists: namely, as sets of related arrays. NetCDF was developed and is maintained and actively supported by the Unidata Program Center (http://www.unidata.ucar.edu) of the University Corporation for Atmospheric Research (UCAR).
 
The netCDF classic data model has previously been established as the core OGC CF-netCDF standard. With this extension to the core standard for the enhanced data model, complex data structures can be represented very easily, allowing for more efficient programming. In performance-critical applications, the enhanced model provides significant benefits. Moreover, if existing HDF5 (Hierarchical Data Format, release 5) applications that depend on groups, user-defined types, unsigned types, or strings produce or use these data, the netCDF enhanced data model is required. The recently introduced candidate NetCDF Enhanced Data Model Extension Encoding Standard is the latest step in a longer-term plan for establishing CF-netCDF as an OGC standard for binary encoding, which will enable standard delivery of data in binary form via several OGC service interface standards, including the OGC Web Coverage Service (WCS), Web Feature Service (WFS), and Sensor Observation Service (SOS) Interface Standards.
 
The candidate OGC Network Common Data Form (NetCDF) NetCDF Enhanced Data Model Extension Encoding Standard and information about submitting comments on this document are available below. The public comment period closes on July 1, 2012.
Comment: 

Comments can be submitted to a dedicated email reflector for a thirty day period ending on the "Close request date" listed above, Comments received will be consolidated and reviewed by OGC members for incorporation into the document. Please submit your comments using the following link: requests [at] lists.opengeospatial.org (Click here to submit comments) The link provided above should include a standard template in the message body. If the preloaded message body does not work properly using your mail client, please refer to the following template for the message body: Comments Template

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OGC Requests: 

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