WolfgangZ wrote: > > I found a layer on a web map server that shows elevation data (no shaded > relief as I think). Is it possible to convert the color information that > is in the image back to elevations? Here a link to one image: > http://mapas.topografia.upm.es/cgi-bin/gtopo?SERVICE=WMS&VERSION=1.1.1&REQUEST=GETMAP&LAYERS=spain25mtintashipsometricas&SRS=EPSG:23030&BBOX=535900,4779200,545900,4789200&WIDTH=200&HEIGHT=200&FORMAT=image/tiff > > I suppose r.mapcalc would be the tool to use, but it seems not possible > without the right color map. Any suggestions?
As this is a WMS server, maybe r.in.wms's "list layers" option shows some elevation options? Worth a look.. Otherwise, it's possible, but you'd have to do a fair bit of work which may not be worth the effort. > PS: I'm sorry for being a bit off topic, as this is not mainly grass > related. IHO interesting problems are not OT if grass can be the tool to solve them.. Hamish _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
