<br clear="all">Hi,<div><br></div><div>I'd like to thank everyone for suggestions on my previous question about the interpolation of DEMs from 30 to 10 m res. and problems I had with 'v.surf.rst' module. I am still experimenting interpolation with it and i hope to get a good interpolated DEM finally. Hamish suggested I use 'r.resamp.rst' instead and I did (with the default values). The results look really impressive; it took equally long time for a single DEM (about 90 minutes). I used the resultant DEM to make slope and aspect maps; nothing seems weird. I also used the mapcalc module to check the difference between 30m and 10m DEMs and it is within -1 and 1 m range. However, I used 'r.resamp.rst' on one imagery only.</div>
<div><br></div><div>So, I am writing to ask for suggestions about which module to use for 30m to 10m interpolation. I understand that 'v.surf.rst' and 'r.resamp.rst' use the same approach (i.e., spline tension) but in different ways (which is not surprising since GRASS offers a lot of alternative ways of manipulating data) and given my limited experience with GIS, I will appreciate suggestions from the more experienced users. </div>
<div><br></div><div>Thanks,</div><div><br></div><div>* I am running a slightly old version (late 2009) of GRASS 6.5 on Mac OS 10.5.8</div><div><br>-- <br>BÜLENT ARIKAN<br>School of Human Evolution and Social Change<br>Arizona State University<br>
Tempe - AZ<br>85287-2402<br>
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