Michael Barton wrote:
Ranier,
On 9/25/07 2:02 AM, "Hamish" <[EMAIL PROTECTED]> 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
______________________________________________________________________________
______
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
__________________________________________
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
--
NEW EMAIL ADDRESS AND ADDRESS:
[EMAIL PROTECTED]
[EMAIL PROTECTED] WILL BE DISCONTINUED END OF MARCH
Rainer M. Krug, Dipl. Phys. (Germany), MSc Conservation
Biology (UCT)
Plant Conservation Unit
Department of Botany
University of Cape Town
Rondebosch 7701
South Africa
Tel: +27 - (0)21 650 5776 (w)
Fax: +27 - (0)86 516 2782
Fax: +27 - (0)21 650 2440 (w)
Cell: +27 - (0)83 9479 042
Skype: RMkrug
email: [EMAIL PROTECTED]
[EMAIL PROTECTED]
_______________________________________________
grassuser mailing list
[email protected]
http://grass.itc.it/mailman/listinfo/grassuser
