[GRASS-SVN] r33938 - grass-addons/raster/r.watershed2
svn_grass at osgeo.org
svn_grass at osgeo.org
Mon Oct 20 09:20:35 EDT 2008
Author: mmetz
Date: 2008-10-20 09:20:34 -0400 (Mon, 20 Oct 2008)
New Revision: 33938
Modified:
grass-addons/raster/r.watershed2/README
Log:
new README
Modified: grass-addons/raster/r.watershed2/README
===================================================================
--- grass-addons/raster/r.watershed2/README 2008-10-20 13:18:23 UTC (rev 33937)
+++ grass-addons/raster/r.watershed2/README 2008-10-20 13:20:34 UTC (rev 33938)
@@ -10,16 +10,16 @@
and that the configured source tree is available.
To compile and install the test version of r.watershed for GRASS,
- 1) copy the directory <r.watershed.fast> into the directory
+ 1) copy the directory <r.watershed2> into the directory
<raster> of the GRASS souorce tree
2) edit <Makefile> in directory <raster>
add the line
- r.watershed.fast \
+ r.watershed2 \
e.g. after
r.watershed \
- 3) change to directory <r.watershed.fast>
+ 3) change to directory <r.watershed2>
run make
4) optionally change to GRASS source directory, something like
@@ -30,16 +30,17 @@
Testing
=======
- The new test version can be invoked with r.watershed.fast.
+ The new test version can be invoked with r.watershed2.
The new sorting algorithm is implemented for both the ram and the
segmented version.
The new segmented version is still much slower than the new ram
version, but the new segmented version is already much faster than
- the original ram version. At least 1GB of RAM are recommended.
+ the original ram version. A new option is available for the segmented
+ mode specifying the maximum amount of memory to be used in MB.
Set up a watershed analysis with the original version, run it.
The command will have been r.watershed <options>
To test, use the same input options, but different output maps
- and run r.watershed.fast <test options>
+ and run r.watershed2 <test options>
There should be no differences in the outputs of the original and
the new version.
If you find critical differences between the original and the fast version,
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