Can you just set the SRID to -1. What 'map design tool' are you using? Sean
On Jun 30, 3:00 pm, tommy408 <[email protected]> wrote: > I'm not mapping anything on earth. The world I'm doing is flat. The > polygons I'm drawing over is raster image I made. So I'm trying not to use > any ellipsoid projection. > > > > Suhr, Ralf wrote: > > > Do not use a local system. For everything larger than 200meters you need a > > srs definition, because you can't messure it exactly. > > > Take a projection from your living area und shift your geometrys to the > > right place. > > > -----Ursprüngliche Nachricht----- > > Von: [email protected] > > [mailto:[email protected]] Im Auftrag von > > tommy408 > > Gesendet: Dienstag, 30. Juni 2009 12:26 > > An: [email protected] > > Betreff: [postgis-users] Define spatial reference system for local datum > > > I don't need special projection. My map is a flat plane so I'm trying to > > use local datum as my srs because a bunch of gis map design tool ask for > > it. > > > So I'm trying to add a new srs into postgis spatial_ref_sys table with the > > following srstext > > > LOCAL_CS["Non-Earth (Meter)",LOCAL_DATUM["Local Datum",0],UNIT["Meter", > > 1],AXIS["X",EAST],AXIS["Y",NORTH]] > > > What do I put for proj4text? > > -- > > View this message in context: > >http://www.nabble.com/Define-spatial-reference-system-for-local-datum... > > Sent from the PostGIS - User mailing list archive at Nabble.com. > > > _______________________________________________ > > postgis-users mailing list [email protected] > >http://postgis.refractions.net/mailman/listinfo/postgis-users > > _______________________________________________ > > postgis-users mailing list > > [email protected] > >http://postgis.refractions.net/mailman/listinfo/postgis-users > > -- > View this message in > context:http://www.nabble.com/Define-spatial-reference-system-for-local-datum... > Sent from the PostGIS - User mailing list archive at Nabble.com. > > _______________________________________________ > postgis-users mailing list > [email protected]http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
