Esri shapefile overview
OS Open Rivers is supplied as an Esri shapefile. Shapefile is an open file format to store geometry and attribute information about spatial features.
Attribute mapping
The naming of attributes between GML and Esri shapefile is different; shapefiles limit attribute names to 11 characters, whereas GML has no limit. The tables that follow map the GML attribute name to its Esri shapefile equivalent for the WatercourseLink and HydroNode features.
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