Hi All,
Today I downloaded GRASS 6.4.2 from SVN and noticed that an earlier
reported (see [0]) r.statistics bug is still present: missing/wrong
statistics for base cat values <= 0. My observations are:
a) base cat value is negative -> statistics = 'inf'
b) base cat value is 0 -> no statistics generated
See some sample data at [1], and resulting statistics at [2].
Are there any plans to change behaviour of r.statistics ?
Regards, Hermann
[0] Earlier reports related on the same issue
http://lists.osgeo.org/pipermail/grass-user/2009-October/052602.html
http://trac.osgeo.org/grass/ticket/763
[1] Sample data
$ head map?.asc
==> map1.asc <==
nrows 3
ncols 3
xllcorner 0
yllcorner 0
cellsize 1
-1 -2 -3
0 0 0
1 2 3
==> map2.asc <==
nrows 3
ncols 3
xllcorner 0
yllcorner 0
cellsize 1
0 -1 -2
0 1 2
1 2 3
$ for f in map?.asc; do r.in.gdal -o $f out=${f%.asc}; done
$ g.region rast=map1
[2] r.statistics results
$ r.statistics base=map1 cover=map2 method=distribution
-3 -2 inf
-2 -1 inf
-1 0 inf
1 1 100.000000
2 2 100.000000
3 3 100.000000
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