After some struggle I managed to start r.denoise, but I received this strange message.
any idea?
(Thu Feb 7 18:59:04 2013)
r.denoise --verbose input=MDE_EM_UTM_WGS84@PERMANENT output=Denoised_MDE_EM_UTM_WGS84
Exporting points…
Denoising…
Input File: /media/datos/atlas/EM/EM_UTM_WGS84/PERMANENT/.tmp/arkham/4367.0.xyz
Can’t open file to load!
cat: /media/datos/atlas/EM/EM_UTM_WGS84/PERMANENT/.tmp/arkha
m/4367.0.DN.xyz: No existe el fichero o el directorio
[please keep it on the ML, so others can also benefit]
Yeah youre right it's all about computational region, and my map is somewhat big. I have to plan another strategy.
ok, maybe a "warning" hint regarding the memory consumption should be added to the r.denoise-manual?
Some time ago I read something about r, neighbors or something like that. Do you think that this will be better way?
from the manuals:
r.denoise denoises (smooths/despeckles) topographic data, particular DEMs derived from radar data (including SRTM), using Xianfang Sun's denoising algorithm. It is designed to preserve sharp edges and to denoise with minimal changes to the original data.
and
r.neighbors - Makes each cell category value a function of the category values assigned to the cells around it, and stores new cell values in an output raster map layer.
both modules may do analog things, but maybe not the same.
any ideas from DEM-specialists?
Helmut
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Subject: RE: [GRASS-user] r. denoise
Date: Fri, 8 Feb 2013 17:28:32 +0000
Thanks you are very kind.
Date: Fri, 8 Feb 2013 03:00:14 -0800
From:
To: grass-user@lists.osgeo.org
Subject: Re: [GRASS-user] r. denoise