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.
Dear list members,
I have a landuse layer and another layer with 20 circular polygons
(buffers) and I want to obtain the amount of each landuse category within
each circular polygon. I tried clip from Geoprocessing Tools but I dont
get the information individualized for each circular polygon.
On 16/07/2012 20:22, Manuel Spínola wrote:
Dear list members,
I have a landuse layer and another layer with 20 circular polygons
(buffers) and I want to obtain the amount of each landuse category
within each circular polygon. I tried clip from Geoprocessing Tools
but I dont get the
Thank you very much Micha.
Your suggestion is based on writing a code, right? I am doing this for
teaching purposes, is it possible to do the same based on the menu of QGIS?
Best,
Manuel
2012/7/16 Micha Silver mi...@arava.co.il
On 16/07/2012 20:22, Manuel Spínola wrote:
Dear list
Manuel,
Once you clip the layers, break the multi-part components apart use the
following menu sequence Vector Geometry Tools Multiparts to Single
Parts -- then they can be summed. You will need to relate you bits back
to your buffer layers however, to match which bit goes in which buffer.
Thank you very much Simon.
That works, specially the second option.
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
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
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
