surface_from_sites

[Helena Mitasova]

Tom Nelson writes:> 
> 
> with a sites file then do either s.surf.idw or s.surf.tps.
> Both create a surface file but tps takes a lot longer and with possibly better results.

I have removed the original message, so I don't know whether I am right,
but if the original question was related to lat/long elevation,
then, if s.surf.tps is going to be used, the coordinates have to
be transformed to x,y (UTM or whatever is appropriate). 

Helena Mitasova