[STATSGRASS] Re: [GRASS-user] Simulation in grass 6

[javier garcia-pintado]

I don't know if this will help you.
Just thinking about your reasons to use windows, maybe it's because you
need to execute some windows program.
My solution is to use R-GRASS in Linux for simulation, what is excellent
beacuse of the wealth of R functions for statistical evaluation of the
models, and the matrix operations in R. Also you can call C compiled
code from your R script to speed up bottlenecks in your code, as pieces
with a lot of loopings etc.
And if you need to execute some windows program, you can also execute
them remotely in a windows machina via ssh and get bak your results to
your linux machine. This also works right.
Good luck
Javier
----------------------------------------

Agustin Lobo wrote:
> Actually, I often use R as an scripting language
> for grass. The problem is that grass commands have
> to be issued using system(), which, for a complex code,
> becomes inconvenient (lots of paste() for generating the
> actual grass command).
> Not being an expert at all on python, I wonder
> if making R able of executing grass commands without
> having to use system() could not be a valid alternative
> to python, at least in some cases.
>
> Anyway, I think that the real solution would be having a GIS
> able of displaying R objects, sort of RGis.
>
> Agus
>
> Hamish escribió:
>> 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.
>>
>> 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
>>
>>
>>
>>      
>> ____________________________________________________________________________________
>>
>> Luggage? GPS? Comic books? Check out fitting gifts for grads at
>> Yahoo! Search
>> http://search.yahoo.com/search?fr=oni_on_mail&p=graduation+gifts&cs=bz
>>
>> _______________________________________________
>> statsgrass mailing list
>> statsgrass at grass.itc.it
>> http://grass.itc.it/mailman/listinfo/statsgrass
>>
>


-- 
Javier García-Pintado
Institute of Earth Sciences Jaume Almera (CSIC)
Lluis Sole Sabaris s/n, 08028 Barcelona
Phone: +34 934095410
Fax:   +34 934110012
e-mail:jgarcia at ija.csic.es 

-------------- next part --------------
A non-text attachment was scrubbed...
Name: jgarcia.vcf
Type: text/x-vcard
Size: 337 bytes
Desc: not available
Url : http://lists.osgeo.org/pipermail/grass-stats/attachments/20070925/893b8d5e/jgarcia.vcf