isn't v.clean using input lines, output polygons, applicable here?
should take lines and build for polygons and add centroids? or am
i missing something...<br><br><div><span class="gmail_quote">On 8/10/06, <b class="gmail_sendername">Moritz Lennert</b> <<a href="mailto:mlennert@club.worldonline.be">mlennert@club.worldonline.be</a>> wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">On Thu, August 10, 2006 15:33, Ulrich Leopold wrote:<br>>>> I have a patched vector map with lines. These lines should be converted
<br>>>> into area boundaries in order to receive areas. Once boundaries are<br>>>> retrieved I still need to attach centroids to them in order to overlay<br>>>> with *another* vector map which already consists of boundaries and
<br>>>> areas<br>>>> including centroids. How can I achieve this?<br>>>><br>>>> I tried to convert all lines into boundaries with<br>>>> v.type type=line,boundary<br>>>>
<br>>>> It seems to work as there are only boundaries left. Next step would be<br>>>> to add automatically centroids to these boundaries. How can this be<br>>>> done?<br>>><br>>> Hi,
<br>>><br>>> see v.category for this. I have added a micro FAQ for this:<br>>> <a href="http://grass.gdf-hannover.de/wiki/Convert_vector_types">http://grass.gdf-hannover.de/wiki/Convert_vector_types</a><br>
><br>> I tried that already but it did not work. It even changes the polygons<br>> back to<br>> single lines. But good that you opened a micro FAQ to add the solution<br>> later.<br>> Any other ideas?<br>
<br>Are you sure your lines are closed, thus defining real areas ? You can<br>check with v.digit.<br><br>Moritz<br><br>_______________________________________________<br>grassuser mailing list<br><a href="mailto:grassuser@grass.itc.it">
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