[GRASS-dev] v.centroid: on boundaries only?

Martin Landa landa.martin at gmail.com
Fri Jan 27 07:42:27 EST 2012


2012/1/27 Moritz Lennert <mlennert at club.worldonline.be>:
>> <qgisgrassmodule label="Add missing centroids to closed boundaries"
>> module="v.centroids">
>>         <option key="input" layermask="0" typemask="area"/>
>>         <option key="output"/>
>>         <option key="option" answer="add" hidden="yes"/>
>>         <option key="cat" answer="1"/>
>>         <option key="step" answer="1"/>
>> </qgisgrassmodule>
>> Am I right saying that it should be
>> typemask="boundary"

no, `v.centroids` goes through all areas and adds centroid if area has
no centroid assigned.

> typemask is not an option for v.centroid, but a grass-plugin specific
> parameter. What does it do ?

AFAIU, it's related to `type` parameter. `typemask` filters vector
maps which contains given type, ie. in this case only vector maps
which contains at least one area (closed set of boundaries) are shown
in combo box.


Martin Landa <landa.martin gmail.com> * http://geo.fsv.cvut.cz/~landa

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