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 also post to the list which GRASS version on which
operating system you use.
Markus
On Jan 23, 2008 3:51 PM, <[EMAIL PROTECTED]> wrote:
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 <[EMAIL PROTECTED]>:
> How many rows and columns are in the input map? Also include the exact
> command line statement you use to run the program.
>
> Sincerely, chuck
>
> Chuck Ehlschlaeger, Geospatial Science Consultant
> PERTAN GROUP, http://pertan.com/
> [EMAIL PROTECTED], 309-255-2727
> http://chuck.ehlschlaeger.info/
>
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of
> [EMAIL PROTECTED]
> Sent: Wednesday, January 23, 2008 7:15 AM
> To: grass-user@lists.osgeo.org
> Subject: [GRASS-user] Use of r.watershed
>
> 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 is, how long would you expect it to take to run? I am
> wondering if I am doing it wrong or if it just takes longer than I
> would expect. The DEM is about 170MB TIFF before I import it to
> GRASS. I have tried to run it a few times using different options,
> each time letting it run for 3 - 4 hours before killing it. I have
> tried both the -m and -4 flags. Any input would be appreciated.
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