[GRASS-user] Re: Patch raster maps very slow - Is there a way to
speed this up?
peifer at gmx.eu
Mon Jan 11 12:34:58 EST 2010
I would try to warp & patch the data with GDAL command line tools (gdalwarp in this case), then import the result into GRASS.
See also http://trac.osgeo.org/gdal/wiki/UserDocs/GdalWarp#WillincreasingRAMincreasethespeedofgdalwarp
-------- Original Message --------
Subject: Patch raster maps very slow - Is there a way to speed this up?
From: stephen sefick <ssefick at gmail.com>
Date: 11/01/2010 14:20
> I have generated DEM tiles (65ish) from LIDAR data in its natural
> projection NC state plane feet (the area covered is about 300 squared
> miles). I have reprojected them into UTM 17 nad 83. These DEMs are
> 1m resolution. I am using r.patch and it has been running for three
> days now and it is 45% done... Would it be faster to stop this
> process, patch them in there native projection and then reproject them
> to UTM? I am running GRASS 6.5.
> kind regards,
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