It looks to me like maybe (491215.9577 532660.8051,491215.9577 532660.8051)
is an invalid line because both points are identical, while (491215.957 532660.8051,491215.9577 532660.8051) is valid because the points aren't identical? Just a guess... -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ken Southerland Sent: Wednesday, December 03, 2008 12:22 PM To: [email protected] Subject: [postgis-users] Problem with MultiLineString This problem occurs on versions... POSTGIS="1.3.1" GEOS="3.0.0rc4-CAPI-1.3.3" PROJ="Rel. 4.5.0, 22 Oct 2006" POSTGIS="1.3.2" GEOS="3.0.0-CAPI-1.4.1" PROJ="Rel. 4.6.0, 21 Dec 2007" The first query gives... select st_isvalid( st_GeomFromText('MULTILINESTRING((491181.9816 532686.6037,491209.6059 532664.6521),(491215.9577 532660.8051,491215.9577 532660.8051))')); NOTICE: IllegalArgumentException: Number of points must be 0 or >3 st_isvalid ------------ f ... while the second gives... select st_isvalid( st_GeomFromText('MULTILINESTRING((491181.9816 532686.6037,491209.6059 532664.6521),(491215.957 532660.8051,491215.9577 532660.8051))')); st_isvalid ------------ t ...and the only difference between the two is that the first point of the second line has an x value of 491215.9577 in the first query and 491215.957 in the second. In other words, the last seven is just stripped and it works. What gives here?! Any ideas? Ken Southerland _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
