[GRASS-user] OT: converting color graphic to height data possible?
hamish_nospam at yahoo.com
Mon Aug 27 05:04:46 EDT 2007
> 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:
> 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
IHO interesting problems are not OT if grass can be the tool to solve
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