Sounds like a bad bug, can you reproduce with a small (like 2 or 3 vertices) input ? Would you file a ticket for it on http://trac.osgeo.org/postgis/ ?
--strk; On Tue, Feb 21, 2012 at 09:49:22AM -0500, Worth Lutz wrote: > > > Postgis 1.5.3 > > I'm having a problem with the output of ST_Line_Substring(). > > Mapserver will not display the results when I replace the original geom with > the substring. The geometry is there but when trying to look at it I see > some anomalies. I have noticed that when I look at the results with > ST_AsText: > > ST_AsText(the_geom) returns: > > MULTILINESTRING((2109131.635 773598.026, ... > > > ST_AsText(ST_Line_Substring(the_geom, 0, 0.5)) returns: > > MULTILINESTRING(SRID=2264;(2109131.635 773598.026, ... > > > I do not know if that is a clue to the problem. > > Also: > > ST_AsEWKT(the_geom) returns: > > SRID=2264;MULTILINESTRING((2109131.635 773598.026, ... > > ST_AsEWKT(ST_Line_Substring(the_geom, 0, 0.5)) returns: > > SRID=2264;MULTILINESTRING(SRID=2264;(2109131.635 773598.026, ... > > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
