Exported Content

Geography Markup Language

The OpenGIS® Geography Markup Language Encoding Standard (GML) The Geography Markup Language (GML) is an XML grammar for expressing geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic transactions on the Internet. As with most XML based grammars, there are two parts to the grammar – the schema that describes the document and the instance document that contains the actual data. A GML document is described using a GML Schema. This allows users and developers to describe generic geographic data sets that contain poi...

GeoMobile and Internet of Things


Access to the Internet will predominantly be from mobile devices including smart phones and machine-to-machine interactions.  Most information exchanged in mobile internet will include spatial components.  

In support of OGC members and society, this OGC Interoperability Program initiative aims to help develop the consensus standards infrastructure necessary to achieve the full societal, economic and scientific benefits of location information in mobile applications worldwide.

GeoPackage Elevation Extension Interoperability Experiment

This interoperability experiment (GPKG-EE IE) tested a proposed extension to the OGC GeoPackage Encoding Standard (12-128r1). Testing was achieved by building GeoPackages using the proposed extension and then using those GeoPackages in visualization and analysis software. This IE produced an OGC Engineering Report that discusses whether the elevation extension meets community requirements and can proceed to the OGC standards adoption process.

GeoSPARQL - A Geographic Query Language for RDF Data

The OGC GeoSPARQL standard supports representing and querying geospatial data on the Semantic Web. GeoSPARQL defines a vocabulary for representing geospatial data in RDF, and it defines an extension to the SPARQL query language for processing geospatial data. In addition, GeoSPARQL is designed to accommodate systems based on qualitative spatial reasoning and systems based on quantitative spatial computations.