Hello Hamish<div>Regarding the v.centroids it worked. Thanks (and thanks Antonio)...</div><div><br>About v.category I suppose I have to do the following:</div><div>1- Create boundaries in TclTk Digitizer</div><div>2- v.category input=teste04@user1 output=output type=boundary,area step=0 </div>
<div>3- v.to.rast this and it worked</div><div><br></div><div>Before I convert to raster, how can i define all boundaries/with Centroids with the same cat value?</div><div><br>Thanks</div><div><br><div class="gmail_quote">
2010/7/27 Hamish <span dir="ltr"><<a href="mailto:hamish_b@yahoo.com">hamish_b@yahoo.com</a>></span><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">
Luisa Peņa wrote:<br>
> I have created a Vectorial using GRASS vector digitizer without<br>
> categories.<br>
<br>
</div>most vector modules require features to have categories if they<br>
are to be processed.<br>
<div class="im"><br>
> How can I add a category to the vectorials in order to agfter<br>
> that, run v.to.rast?<br>
<br>
</div>v.category or v.centroids will do it.<br>
<br>
"areas" in GRASS are really boundaries (no category) with a<br>
centroid point inside them (centroid has the category).<br>
<br>
<br>
regards,<br>
<font color="#888888">Hamish<br>
<br>
<br>
<br>
</font></blockquote></div><br></div>