[fdo-internals] PostGIS and Spatial context question

Bruno Scott bscott at geomapgis.com
Wed Apr 9 03:37:20 EDT 2008


PostGIS store its metadata in a table called geometry_columns
For each of the spatialy enabled table we can specify a srid in this
geometry_columns table.
For PostGIS this srid is an integer that reference a coordinate system
definition in a table called spatial_ref_sys.

The actual implementation of the PostGIS provider that Matheus did, return
something like
PostGIS_SRID as spatial context ( where SRID is replaced by the proper srid
integer )
When i try to connect to PostGIS within Map2008 or Map2009, Map display an
"Unknown" spatial context
see screen capture
http://www.nabble.com/file/p16581335/AddDataToMap.jpg 

Is it normal?
How map is suppose to know how to translate a PostGIS srid to a Mentor one?

Bruno
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