Geodetic data Grid eXchange Format (GGXF)

This standard defines a single file format that may be used for a wide range of geodetic applications requiring interpolation of regularly gridded data.

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Document title Version OGC Doc No. Type
OGC GGXF geodetic data grid exchange format 1.0 22-051r7 IS

Official model files and encoding schemas

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Overview

The Geodetic data Grid eXchange Format (GGXF) is designed to be a single file format that may be used for a wide range of geodetic applications requiring interpolation of regularly gridded data, including (but not limited to):

  • Transformation of latitude and longitude coordinates from one geodetic coordinate reference system to another;
  • Transformation of gravity-related heights from one vertical coordinate reference system to another;
  • Reduction of ellipsoid heights to the geoid, quasi-geoid or a surface of a vertical reference frame; and 
  • The description of coordinate changes due to deformation.

The GGXF format has been designed specifically for carrying gridded geodetic parameters supporting coordinate transformation.