Re: [GRASS-user] Use of r.watershed

2008-01-23 Thread Hamish
Markus: > see also here for some comparison: > http://www.cs.duke.edu/geo*/terraflow/speedup.html it doesn't list GRASS version but from the Pentium III and March 2001 references I would expect that the version of r.watershed there was from GRASS 5.0 and using the old color setting code which pro

Re: [GRASS-user] Use of r.watershed

2008-01-23 Thread Hamish
hydromodeling.com wrote: > > I have also tried using the -m and -4 flags placed after the > > r.watershed part. On modern systems using -m will slow it down a lot for minor memory savings. Don't use it. I wouldn't bother with -4 either. > r.terraflow note as far as output basins go this calculat

Re: [GRASS-user] Use of r.watershed

2008-01-23 Thread Markus Neteler
On Jan 23, 2008 6:28 PM, <[EMAIL PROTECTED]> wrote: > 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 ru

Re: [GRASS-user] Use of r.watershed

2008-01-23 Thread Dylan Beaudette
>> > Chuck Ehlschlaeger, Geospatial Science Consultant > >> > PERTAN GROUP, http://pertan.com/ > >> > [EMAIL PROTECTED], 309-255-2727 > >> > http://chuck.ehlschlaeger.info/ > >> > > >> > > >> > -Original Message-

Re: [GRASS-user] Use of r.watershed

2008-01-23 Thread hydro
sultant > 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 8:52 AM > To: Charle

Re: [GRASS-user] Use of r.watershed

2008-01-23 Thread M S
; > -Original Message- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of > > [EMAIL PROTECTED] > > Sent: Wednesday, January 23, 2008 8:52 AM > > To: Charles Ehlschlaeger > > Cc: grass-user@lists.osgeo.org > > Subject: RE: [GRASS-

Re: [GRASS-user] Use of r.watershed

2008-01-23 Thread hydro
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 a

RE: [GRASS-user] Use of r.watershed

2008-01-23 Thread hydro
IL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Wednesday, January 23, 2008 8:52 AM To: Charles Ehlschlaeger Cc: grass-user@lists.osgeo.org Subject: RE: [GRASS-user] Use of r.watershed Chuck, Thanks for your reply. The DEM has 8,627 rows and 10,270 columns. The command line statement I used is: r.w

RE: [GRASS-user] Use of r.watershed

2008-01-23 Thread hydro
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 <[EM

RE: [GRASS-user] Use of r.watershed

2008-01-23 Thread Charles Ehlschlaeger
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/ -Orig