Which function transform x,y to latitude/longitude? - Mailing list pgsql-sql

Hi,

For example x= 38356.62 y= 42365.19.how to transform it to latitude 1.399948, longitude 193.92644?

Which function I could use? I don’t know the algorithm.

Initial data is: ("+proj=cass +a=6378137.0 +rf=298.257223563 +lat_0=1.287639n +lon_0=103.8516e +x_0=30000
+y_0=30000").

Thanks a lot.

bill

_________________________________________________________________
与联机的朋友进行交流，请使用 Live Messenger; http://get.live.com/messenger/overview