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List:       grass-user
Subject:    Re: [GRASS-user] denoising error (r.denoise)
From:       "Helmut Kudrnovsky" <hellik () web ! de>
Date:       2013-01-26 11:34:19
Message-ID: trinity-116c357d-6170-4ed9-999a-8ce67f403a57-1359200059361 () 3capp-webde-bs52
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hi,

> I think that this is, indeed, a (lack of enough) memory issue. On linux, with
> 32GB of RAM of course, denoising 20+ tiles was no problem.

here a win7-64bit box with 8 GB RAM

> Right -- the module wont run if you set a geographic ref. system. No problem,
> even from inside a WGS84 location. Setting a proper EPSG code refering to a
> projected reference system is all that is required.
> 
> Best, Nikos

another way would be gdalwarp the DEM to a projected reference system before \
importing in a grass location; 

in gdalwarp are some more resampling methods (http://www.gdal.org/gdalwarp.html) 
[without looking in the r.denoise-code which resampling methode is used there]

best regards
Helmut


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