In my experience it's easier to do a buffer on the line features first (something nominal) which turns it into a polygon. In this way, the operators you want to use work consistently.
----- Original Message ---- > From: Subha Ramakrishnan <su...@gslab.com> > To: Steve Lime <steve.l...@dnr.state.mn.us> > Cc: mapserver-users@lists.osgeo.org > Sent: Tuesday, January 6, 2009 12:04:13 AM > Subject: [mapserver-users] Showing pop up for a line > > Hi, > > I am using Mapserver 5.0.2 with Openlayers. > I've a line layer (from mapserver) shown on my base map(google physical). > Now, when i click on a line, i want to show a pop using openlayers. > I am able to do this for a polygon layer. I send the lat,lon of the point > that > is clicked and use the postgis query > "ST_Contains(topology,geomFromText('POINT(77.87117958068927 > 13.491965860913544)',-1))" to find the polygon (and fetch the polygon > specific > data to show on pop up) and attach the Openlayers popup to the point clicked. > > I am not able to do this for a line layer as the postgis query doesn't return > anything. > I tried this query also, > "ST_Contains(topology,geomFromText('POINT(77.87117958068927 > 13.491965860913544)',-1)) AND > distance(topology,geomFromText('POINT(77.87117958068927 > 13.491965860913544)',-1)) <= 1" but it doesn't work. > > Does any one know how to check if a point is a part of a line or if there is > any > other way to show the pop up? > > Thanks a lot for the help. > > Regards, > Subha > _______________________________________________ > mapserver-users mailing list > mapserver-users@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/mapserver-users _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users