ISO 19136:2007 Geographic information - Geography Markup Language (GML)

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Full name ISO 19136:2007, Geographic information – Geography Markup Language (GML) (also published as OpenGIS Geography Markup Language (GML) Encoding Standard)
Version ISO: Edition 1

OGC: V 3.2.1

Amendments None
Corrigenda None
Published by ISO/TC 211 and OGC
Languages English, French
Online overview
Type of standard ISO International Standard and OpenGIS Implementation Specification,Application level.
Related standard(s) ISO 19107:2003, Geographic information – Spatial schema

ISO 19109:2005, Geographic information – Rules for application schema ISO 19118:2011, Geographic information -- Encoding ISO 19137:2007, Geographic information – Core profile of the spatial schema.

Application GML is an Extensible Markup Language (XML) encoding for transport and storage of

geographic information.It is typically used for vector geometry with associated attribute data, such as, a road network or cadastral data. GML is specifically powerful for web processing of geo-spatial data..

Implementation benefits GML is a human readable and machine ‘processable’ encoding with makes it ideal for web data dissemination. GML is based on XML, which brings a number of advantages, such as, XML providing a method for verifying data integrity; the XML structure allowing easy integration of GML data with non-spatial data; and XML transformations. GML allows topology to be encoded in the schema.