The attribute group SRSReferenceGroup is an optional reference to the CRS used
by this geometry, with optional additional information to simplify the processing of the
coordinates when a more complete definition of the CRS is not needed. In general the
attribute srsName points to a CRS instance of gml:AbstractCoordinateReferenceSystem. For
well-known references it is not required that the CRS description exists at the location the
URI points to. If no srsName attribute is given, the CRS shall be specified as part of the
larger context this geometry element is part of.
|