[GRASS-user] r.watershed ending with an error

[stephen sefick]

6.4.0RC5
Mac OS X 10.5.7
1.8Ghz 1GB of RAM-


the only input is the raster patch_dem 1/3arc second

r.watershed elevation=patch_dem at PERMANENT threshold=10000
accumulation=accumulation basin=catch stream=str

this exits with the following message:
SECTION 1a (of 5): Initiating Memory.
ERROR: Raster map <patch_dem at PERMANENT> not found
WARNING: Subprocess failed with exit code 256
WARNING: category information for [accumulation] in [PERMANENT] missing or
         invalid
WARNING: category information for [catch] in [PERMANENT] missing or invalid
WARNING: category information for [str] in [PERMANENT] missing or invalid

I know catch is not in PERMANENT it is an output etc.

I have been trying all day with different parameters and I can't
figure it out.  I want to delineate watersheds with there aspects and
"other cool watershed things".  I also want to get the strahler order
for streams.  I was going to use v.strahler, but this addon seems to
be defunct.  I have used it but it writes values to a text file...  I
am thinking of using SAGA for stream ordering- I believe that it has
this particular feature.
thanks in advance,

Stephen Sefick

-- 
Stephen Sefick

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods.  We are mammals, and have not exhausted the
annoying little problems of being mammals.

								-K. Mullis