On Jan 16, 2010, at 7:54 PM, Oscar Zamudio wrote:

Hi Oscar.

Ok, when I insert my points in my spatial enabled database I used:
[...]
without no spatial reference system explicit so I guess the SRID is set to "unknown" i.e. -1. Then naively I created a new column named srid for my table and put the right value of SRID

SRID information is stored *both* in the geometry_columns table (srid column),
and inside each geometry itself.

So consider using UpdateGeometrySRID function to fix your issue.
<http://postgis.refractions.net/documentation/manual-svn/UpdateGeometrySRID.html >

HTH,

--
Olivier




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