GML File Documentation

Overview

Feature Value
File Extension .gml
MIME Type application/gml+xml
Full Name Geography Markup Language File
Developed By Open Geospatial Consortium
Format Type XML
Primary Use Geographical data exchange
Character Encoding UTF-8
Geometric Objects Supported Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, and more.
Coordinate Reference Systems Support Yes, including EPSG codes
Namespace Support Yes
Application Profiles CityGML, AIXM, INSPIRE, and more
Extensions Available Yes, for enhancing functionalities
Integration Capability High, interoperable with numerous GIS and CAD software
Advantages Flexible, Open Standard, Extensible, Supports complex geometries
Validation XML Schema
Linkage to Stylesheets Yes, for rendering on web maps
Embedding of Attributes Yes, for rich data descriptions
Data Interoperability High with other XML based formats
Usage in Web Services Commonly used in Web Map Service (WMS) and Web Feature Service (WFS)
Compression Supported Yes, can be compressed as .gz or .zip for reduced size