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What is a GML file?

A GML file format — also known as a Geography Markup Language format, as defined by the Open Geospatial Consortium (OGC) — is an interchange format for geographic transactions across the internet. This format is similar to XML, but is optimized towards the expression of geological features and is often used for webservice data calls (API). Spotzi recommends using GML and KML formats for geographical purposes; the XML format is only sufficient when working exclusively with data.

GML file structure explained

A complete GML dataset contains the following specifications:

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Which software opens GML files?

Associated filename extensions

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