[postgis-users] Custom Projection

[Sean Christopher Conway]

Hello, I would like to create a custom projection which is essentially a 
variation on the geographic coordinate system EPSG 4326, i have created 
one and the srtext is "GEOGCS["Geographic Coordinate 
System",DATUM["WGS84",SPHEROID["WGS84",6378137,298.257223560493]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433]]""


and the proj4text is this:


"+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 
+units=m +k=1.0 +nadgrids=@null +no_defs"

My goal is to output a shapefile from postgis with a Geographic 
coordinate system and the datum as : WGS84