[GRASS-user] accumulation map from directions map

[Achim Kisseler]

Dear Markus,

I follow Silvias suggestion and use h.tca in JGRASS.

BTW: Isn't is possible to integrate the horton-tools into grass?

Thanks,
Achim

Markus Neteler schrieb:
> 2009/11/19 Achim Kisseler <ak7 at jupiter.uni-freiburg.de>:
>> Thanks, Jaroslaw for response,
>>
>>> there shoud be no problem if you have oryginal DEM
>> I know, but I do NOT have the DEM. Thats the problem.
> 
> 
> Ah, now I understand "is there a way in GRASS to build an
> accumulation map from a directions map without a dem map?"
> 
> So: If you are on earth, you can get it here (mars/moon should be also
> available somewhere :-):
> 
> http://grass.osgeo.org/wiki/Global_datasets
> - SRTM
> - ASTER GDEM
> 
> especially
> http://grass.osgeo.org/wiki/ASTER_topography
> 
> If you need to start from the accumulation map and no way to
> use a DEM, then I have no idea (but see the other comments)
> 
> Hope this helps,
> Markus