[GRASS-dev] r.watershed and swap memory
hmitaso at unity.ncsu.edu
Wed Mar 19 11:00:21 EDT 2008
On Mar 19, 2008, at 10:58 AM, Markus Neteler wrote:
> On Wed, Mar 19, 2008 at 3:54 PM, Helena Mitasova
> <hmitaso at unity.ncsu.edu> wrote:
>> Ivan - instead of using the small threshold that is killing it, if
>> you need just the stream network use arbitrarily large threshold and
>> derive your stream network from the accum file like this
>> r.mapcalc "mystreams=if(abs(myaccum)>30,1,null())"
>> or you can use abs(myaccum) instead of 1 if you need contributing
>> area for each stream cell.
>> (isn't this in the man page? I have been doing it that way for
> apparently it isn't. Would you mind to add it to
that is for r.watershed Helena
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