[GRASS-user] [GRASSLIST:270] Fwd: Developing a forest fragmentation index

[Paulo van Breugel]

Hi, there is an updated version for grass 7 which you can install using
g.extension.

On Sat, 27 Dec 2014 18:40 Anusheema Chakraborty <anusheema at gmail.com> wrote:

> Thanks for the response!
>
> I was trying to use the shell script in GRASS 6. And I am working on a
> Windows system. I'll use the updated version of the Shell script with GRASS
> version 7, I suppose, and I would let you know how it goes.
>
> Thanks again!
>
> On 27 December 2014 at 19:25, Paulo van Breugel <p.vanbreugel at gmail.com>
> wrote:
>
>> Hi Anusheema
>>
>> As I replied on your question on my blogpost, there are two versions of
>> the script; one for GRASS 6  and one for GRASS 7. In both cases you need to
>> install the script manually (I am planning to rewrite the script as a
>> python script, but that will take some time).
>>
>> The script for GRASS 7 did indeed not work anymore for me due to syntax
>> changes in some of the functions used. An updated version should be
>> available on
>> http://trac.osgeo.org/grass/browser/grass-addons/grass7/raster/r.forestfrag.
>> If you try out and it doesn't work, let me know (and if so, please indicate
>> whether you are running this on Linux or Windows).
>>
>> Paulo
>>
>>
>> On Sat, Dec 27, 2014 at 2:38 PM, Markus Neteler <neteler at osgeo.org>
>> wrote:
>>
>>> On Sat, Dec 27, 2014 at 12:53 PM, anusheema <anusheema at gmail.com> wrote:
>>> > Dear list members,
>>> >
>>> > I am also interested in implementing Dr. Kurt Ritters forest
>>> fragmentation
>>> > model. I was, however, attempting this in R Statistical software,
>>> although I
>>> > am pretty new to both R and GRASS.
>>>
>>> Which GRASS version do you use?
>>>
>>> > While reading forums on this model, I came across this post. I see
>>> that Mr.
>>> > Maning Sambale and Mr. Stefan Sylla have developed an AddOn for GRASS:
>>> > r.forestfrag (
>>> http://grasswiki.osgeo.org/wiki/GRASS_AddOns#r.forestfrag).
>>> > But while trying to attempt this model on GRASS, it keeps showing an
>>> error
>>> > (AddOn not found).
>>>
>>> If you are using GRASS 6: the script has been written for GRASS 7. You
>>> can install both 6 and 7 in parallel on the same computer. However, I
>>> see a link to a GRASS 6 version of the script in the Wiki page.
>>>
>>> If you are using GRASS 7: The reason is that it has not been
>>> implemented as Python script but as Shell script. To my knowledge
>>> g.extention (the extension manager) is not capable to deal with shell
>>> scripts.
>>>
>>> > If you could please share the script? I was trying to implement the
>>> script
>>> > mentioned in this post, but without much luck. In R, with the help of
>>> this
>>> > script, replicating Pf is easier, however, for Pff, implementing the
>>> code in
>>> > cardinal direction only, is more complex.
>>>
>>> You can simply download the script from here:
>>>
>>> http://trac.osgeo.org/grass/browser/grass-addons/grass7/raster/r.forestfrag/r.forestfrag?format=txt
>>> and put it into the search path in your GRASS session. Be sure to set
>>> the "executable" flag.
>>>
>>> Please let us know how it goes.
>>>
>>> Markus
>>> _______________________________________________
>>> grass-user mailing list
>>> grass-user at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/grass-user
>>>
>>
>>
>
>
> --
>
> *Anusheema Chakraborty*
> PhD Scholar
> Department of Natural Resources
> TERI University
> 10, Institutional Area, Vasant Kunj, New Delhi - 110070 (India)
> Website: www.teriuniversity.ac.in
>
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