Hello All,
I am new to GRASS but have been using GIS (mainly ESRI products) for
quite a few years. I am trying to learn how to use GRASS to carry out
hydrology related analyses. Currently, I am trying to use the
r.watershed command to delineate the basins for a watershed. My
question
Chuck,
Thanks for your reply. The DEM has 8,627 rows and 10,270 columns.
The command line statement I used is:
r.watershed el=fill th=400 ac=fac ba=basins st=str
I have also tried using the -m and -4 flags placed after the r.watershed part.
Thanks,
Matt
Quoting Charles Ehlschlaeger
Thanks. I will try and change my threshold value this evening.
A little background, I have completed this phase of the project at
work using ArcHydro and it took about half a day total to run
through the tools (fill, flow direction, flow accumulation, etc.). I
am trying to now do the
Markus,
I am running GRASS version 6.2.2 on Ubuntu 7.10. I am at work right
now and don't have access to the machine, but I am pretty sure about
the GRASS version. If I am wrong I will post a correction when I get
home.
Matt
Quoting Markus Neteler [EMAIL PROTECTED]:
Matt,
please
Thanks for pointing out the excerpt from the manual. So, based on
that it seems that r.watershed will take longer to run than the
ArcHydro tools. How much longer? I guess I will just let it run and
see if I can find out. Then I will run r.terraflow and compare the
differences between
