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

[Simon Cropper]

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.

Alternatively, and easier in my mind, you could "Union" your layers. 
This creates an exploded layer where each bit has attributes of both 
parent layers. You can then delete those elements that do not have a 
buffer value. Two steps but less messy.

On 17/07/12 03:22, 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 information individualized for each circular polygon.
>   Is it possible to get the landuse within each circular polygon in one
> step?
>
> Best,
>
> Manuel
>
> --
> *Manuel Spínola, Ph.D.*
> Instituto Internacional en Conservación y Manejo de Vida Silvestre
> Universidad Nacional
> Apartado 1350-3000
> Heredia
> COSTA RICA
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> mspinola10 at gmail.com <mailto: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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-- 
Cheers Simon

    Simon Cropper - Open Content Creator

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