Hi, I can't say anything about OpenLayest client, but you may find some other useful information from here: http://mapserver.gis.umn.edu/docs/howto/raster_data/#raster-query
Basically I think that WMS GetFeatureInfo query might be close to what you are searching for. -Jukka Rahkonen- > -----Alkuperäinen viesti----- > Lähettäjä: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Puolesta Andrew Mason > Lähetetty: 29. toukokuuta 2008 11:30 > Vastaanottaja: [email protected] > Aihe: [mapserver-users] Accessing raster cell values > > Hello List, > > This question may be a general newbie GIS question and not > solely related to Mapserver, so apologies if I'm posting to > the wrong place. > > I am serving a GeoTiff via Mapserver using WMS, and > displaying it using OpenLayers, so far so good. > I need to be able to click on a point on the map and display > the value held within that particular Raster cell. > Can anyone suggest what mechanism I should use for this? WCS > looks like it might be the thing I need, but I'm having > difficulty finding much in the way of examples and instructions. > I've followed what examples there are and all I can get > Mapserver to return using WCS, is a Geotiff with every pixel > set to zero. > So I've obviously not got it working correctly, and even if > it were I'm not sure how to get the information I need out of > the returned Geotiff when my client is OpenLayers. > > Can anyone suggest a way to access a raster's values when it > is served by Mapserver and viewed using OpenLayers? > > Thank you > > Andrew Mason > _______________________________________________ > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users > _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
