[GRASS-user] Simulation in grass 6

[Rainer M. Krug]

Michael Barton wrote:
> Ranier,
> 
> 
> On 9/25/07 2:02 AM, "Hamish" <hamish_nospam at yahoo.com> wrote:
> 
>> Rainer M. Krug wrote:
>>
>>> I am planning to write a spatial simulation model, simulating the spread
>>> of alien species on a landscape scale by using grass.
>>> My question how I should write the simulation model, i.e. in which
>>> scripting language. I am using Linux and have quite a bit of experience
>>> with R, so I thought that R (together with spgrass6) would be a nice
>>> scripting language to write the simulation and sending the grass
>>> commands through to grass, because it offers me quite a bit more
>>> concerning strtucturing on the modelling side then using a normal shell
>>> script
>>> But the simulation should also run under Windows and I don't have any
>>> experience with grass and R under windows.
> 
> You might want to take a look at the wildfire modeling routines already in
> GRASS. I think that with minimal work, these could be modified to become
> general spread-modeling routines. I've used these (with some difficulty) to
> model the spread of other phenomena than wildfires and would love to have
> general spread routines in GRASS.

Good idea - I haven't thought about them. I'll see what I can do with them.

> 
>> It sounds very well suited for Linux or MacOSX, but I've little idea about the
>> GRASS+R Windows situation. Maybe someone on the statsgrass mailing list knows?
>> (taking the liberty to cc)
>>
>>> I have the following questions:
>> ..
>>> 3) Is any other scripting language more suitable for what I want to
>>> achieve (I have no experience with C / C++, but quite a bit with Delphi.
>>> I have never used the likes of perl et al. and bash scrips seem a bit
>>> awkward to me for bigger projects.)?
>> You could try python. The next version of GRASS will use python heavily for
>> the
>> GUI, so expect lots of example scripts, help on the mailing list from fellow
>> travelers, and tight integration with the code.
>>
>> Learn python in 10 min:  http://www.poromenos.org/tutorials/python
>>
>> Also there is a SWIG/Python interface to any needed GIS library functions,
>> which is pretty cool, although the grass modules generally give you what you
>> need without having to resort to using any low-level libgis functions.
>>
>> see  http://grass.gdf-hannover.de/wiki/GRASS_and_Python
>>      http://freegis.org/cgi-bin/viewcvs.cgi/grass6/swig/python/
>>
>> Hamish
> 
> I also want to second Hamish's mention of Python. It is a powerful and
> (relatively) easy to learn language that will become increasingly important
> to GRASS in the future. Extensions scipy and numpy give it additional
> abilities.
> 
> Michael
> 
>>
>>
>>       
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> 
> __________________________________________
> Michael Barton, Professor of Anthropology
> Director of Graduate Studies
> School of Human Evolution & Social Change
> Center for Social Dynamics & Complexity
> Arizona State University
> 
> phone: 480-965-6213
> fax: 480-965-7671
> www: http://www.public.asu.edu/~cmbarton
> 
> 


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Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)

Plant Conservation Unit
Department of Botany
University of Cape Town
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