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-tp24269524p24269524.html > 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-tp24269524p24277673.html 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
