A solution? (including resolution) - Re: [GRASS-user] Re: Help:
Converting a raster map between locations (from wgs84 lat /
long to UTM)
Glynn Clements
glynn at gclements.plus.com
Mon Nov 3 14:55:03 EST 2008
Corrado wrote:
> this is what I have done:
> 9) set the resolution to the resolution calculated previously:
>
> g.region nsres=927.90359439 ewres=508.14568663
>
> 10) project the raster file:
>
> r.proj input=dummy01 location=test12 mapset=PERMANENT
> output=test_fromtest12_02 method=cubic
>
> 11) set the resolution I want:
>
> g.region nsres=2000 ewres=2000
>
> 12) resample:
> r.resample input=test_fromtest12_02
> output=test_fromtest12_02_resample --overwrite
>
> What do you think?
You would probably get better results if you replaced the above four
steps with just:
g.region nsres=2000 ewres=2000
r.proj ...
Resampling is invariably lossy, so fewer resampling steps are
preferable to more steps.
--
Glynn Clements <glynn at gclements.plus.com>
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