Luisa Peña wrote:
> I have created a Vectorial using GRASS vector digitizer without
> categories.

most vector modules require features to have categories if they
are to be processed.

> How can I add a category to the vectorials in order to agfter
> that, run v.to.rast?

v.category or v.centroids will do it.

"areas" in GRASS are really boundaries (no category) with a
centroid point inside them (centroid has the category).


regards,
Hamish



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