[Qgis-user] Getting landuse information for several circular polygons

[G. Allegri]

Hi Manuel,
I also suggest you to consider the analysis tools provided by Sextante [1].
It offers "bridges" to other GIS analysis software, like GRASS and SAGA,
and they have a lot of analysis functionalities and algorithms.
For example GRASS has the r.li.* [1 ]set of commamds for landscape analysis.

giovanni

[1] http://plugins.qgis.org/plugins/sextante/
[2] http://grass.fbk.eu/grass64/manuals/html64_user/r.li.html

2012/7/17 Manuel Spínola <mspinola10 at gmail.com>

> Thank you very much Simon.
>
> No offense at all, by the contrary, very helpful and very grateful for
> your message.
>
> I will check all the stuff you suggested.
>
> I teach landscape ecology and wildlife habitat evaluation for master
> students, I use R for some topics, but I want use more QGIS and stay away
> from commercial software.  Our students (from all over Latin America)
> usually work under very restrictive budgets.
>
> Best,
>
> Manuel
>
>
> 2012/7/16 Simon Cropper <simoncropper at fossworkflowguides.com>
>
>> Manuel,
>>
>> I am not aware of any specific tutorials for doing this work in QGIS.
>>
>> No offense but these tasks are relatively basic. Your comment "I found
>> this task kind of difficult to do in QGIS" is suggestive that you have
>> difficulty in either basic GIS concepts or extrapolating your existing
>> knowledge from a commercial package to QGIS.
>>
>> *Assuming you stick with QGIS*
>>
>> Micha Silver has provided a tutorial called "GIS basics with Quantum GIS"
>> http://www.osgeo.org/node/1058 that may help you master the basics.
>>
>> The QGIS website has a great section called "How do I do that in QGIS?"
>> that covers alot of material http://hub.qgis.org/projects/**
>> quantum-gis/wiki/How_do_I_do_**that_in_QGIS#How-do-I-do-that-**in-QGIS<http://hub.qgis.org/projects/quantum-gis/wiki/How_do_I_do_that_in_QGIS#How-do-I-do-that-in-QGIS>.
>> Note the large number of videos on youtube -- sometimes seeing it done can
>> help.
>>
>> *Assuming you are considering an alternative*
>>
>> The OSGeo Educational Content Inventory also has a wide variety of other
>> educational material available that might also help fill in the gaps.
>> http://www.osgeo.org/**educational_content<http://www.osgeo.org/educational_content>
>>
>> Finally, QGIS is not the only fosGIS out there. Check out what is on
>> offer on the LiveDVD (http://wiki.osgeo.org/wiki/**Live_GIS_Disc<http://wiki.osgeo.org/wiki/Live_GIS_Disc>
>> ).
>>
>> Personally, I found using gvSIG relatively easy when moving from ArcView.
>> Unfortunately the bulk of the tutorials are in Spanish; unlike QGIS which
>> are predominantly in English. See my website for details and a list of
>> ecological tutorials I have prepared to date.
>>
>> *Final Comment*
>>
>> All this material is predicated by the premise that you actually know
>> what things are called. Reprojection and transformation is a good example.
>> Projection, SRS and CRS another. When stuck, posing a problem on the forums
>> can help as others can help you with terminology and suggest methods to
>> solve you problems.
>>
>> I hope this helps.
>>
>>
>> On 17/07/12 11:50, Manuel Spínola wrote:
>>
>>> What I am trying to do is a very common task in landscape ecology.  The
>>> buffer could be considered a landscape for some species and some metrics
>>> could be obtained for these "landscapes", however, I found this task
>>> kind of difficult to do in QGIS.  Any input on this?  Is there any
>>> oriented landscape ecology tutorial for QGIS.
>>>
>>
>>
>> [snip]
>>
>>
>> --
>> Cheers Simon
>>
>>    Simon Cropper - Open Content Creator
>>
>>    Free and Open Source Software Workflow Guides
>>    ------------------------------**------------------------------
>>    Introduction               http://www.fossworkflowguides.**com<http://www.fossworkflowguides.com>
>>    GIS Packages           http://www.fossworkflowguides.**com/gis<http://www.fossworkflowguides.com/gis>
>>    bash / Python    http://www.fossworkflowguides.**com/scripting<http://www.fossworkflowguides.com/scripting>
>>
>>
>>
>
>
> --
> *Manuel Spínola, Ph.D.*
> Instituto Internacional en Conservación y Manejo de Vida Silvestre
> Universidad Nacional
> Apartado 1350-3000
> Heredia
> COSTA RICA
> mspinola at una.ac.cr
> mspinola10 at gmail.com
> Teléfono: (506) 2277-3598
> Fax: (506) 2237-7036
> Personal website: Lobito de río<https://sites.google.com/site/lobitoderio/>
> Institutional website: ICOMVIS <http://www.icomvis.una.ac.cr/>
>
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>
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