[postgis-users] Define spatial reference system for local datum

Suhr, Ralf Ralf.Suhr at itc-halle.de
Tue Jun 30 03:53:10 PDT 2009


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: postgis-users-bounces at postgis.refractions.net [mailto:postgis-users-bounces at postgis.refractions.net] Im Auftrag von tommy408
Gesendet: Dienstag, 30. Juni 2009 12:26
An: postgis-users at postgis.refractions.net
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 postgis-users at postgis.refractions.net
http://postgis.refractions.net/mailman/listinfo/postgis-users



More information about the postgis-users mailing list