[GRASS-user] r.sim.water & time-stepped walkers - additional info
neteler at itc.it
Thu May 17 01:50:35 EDT 2007
- post the entire command line?
- maybe post an example for Spearfish (way easier to reproduce for us)?
On Wed, May 16, 2007 at 11:15:58AM -0500, M S wrote:
> Followup info:
> Here is the actual error message when trying to draw the walker output
> that only has one point, "GRASS_INFO_ERROR(26696,1): Cannot open old
> vector swwalkers401799 at PERMANENT on level 2"
> thought that might be useful info?
> On 5/16/07, M S <mseibel at gmail.com> wrote:
> I am still investigating the outputs of various simulations I ran, and
> may eventually answer my own question. However, I am hoping someone
> with experience using this module can provide some insight or guidance.
> First off, the r.sim.water is very cool! Especially an animation
> sequence of walkers I saw in a document online by Helena Mitasova (
> ) that referenced this gif animation:
> However, under various simulations I am getting no walker output for
> some time steps through the simulation. Also, if the simulation is not
> time-stepped no walkers are outputted. Using v.info I am getting one
> point for walker output. If I step through the simulation 10 times, I
> get walker output on the 1st step, the 9th and 10th step, and only one
> walker point for all the other steps. In other simulations that had 8
> steps, I might have gotten walker output for 2 of the 8 steps.
> I am still tuning the input parameters and checking results. If anyone
> has some suggestions relating to this issue I would greatly appreciate
> Visible links
> 1. mailto:mseibel at gmail.com
> 2. http://www.ing.unitn.it/%7Egrass/conferences/GRASS2002/proceedings/proceedings/pdfs/Mitasova_Helena_2.pdf
> 3. http://skagit.meas.ncsu.edu/%7Ejaroslav/centennial/anim/walkers.gif
> 4. http://v.info/
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> grassuser at grass.itc.it
Markus Neteler <neteler itc it> http://mpa.itc.it/markus/
FBK-irst - Centro per la Ricerca Scientifica e Tecnologica
MPBA - Predictive Models for Biol. & Environ. Data Analysis
Via Sommarive, 18 - 38050 Povo (Trento), Italy
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