[mapserver-users] Showing pop up for a line

[Dan Little]

You may also want to use mapserver to render the lines as a raster layer instead of vector.



----- Original Message ----
> From: Steve Lime <Steve.Lime at dnr.state.mn.us>
> To: Subha Ramakrishnan <subha at gslab.com>
> Cc: mapserver-users at 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.3010103 at 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 at lists.osgeo.org 
> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
> 
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