You may also want to use mapserver to render the lines as a raster layer instead of vector.
----- Original Message ---- > From: Steve Lime <steve.l...@dnr.state.mn.us> > To: Subha Ramakrishnan <su...@gslab.com> > Cc: mapserver-users@lists.osgeo.org > Sent: Tuesday, January 6, 2009 9:31:18 AM > Subject: Re: [mapserver-users] Showing pop up for a line > > Why not use straight MapServer queries? Set a reasonable tolerance and that > should > work ok too. > > Steve > > >>> On 1/6/2009 at 12:04 AM, in message <4962f45d.3010...@gslab.com>, Subha > Ramakrishnan wrote: > > 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 _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users