with the geometry &gt;&gt; data, correct? And the units of the number it returns is &gt;&gt; specified by the SRID? &gt;&gt; &gt;&gt; Thanks for the help, &gt;&gt; &gt;&gt; Robert Y &gt; _______________________________________________ &gt; postgis-users mailing list &gt; postgis-users at postgis.refractions.net &gt; http://postgis.refractions.net/mailman/listinfo/postgis-users