https://grasswiki.osgeo.org/w/index.php?action=history&feed=atom&title=HOWTO_get_centroid_coordinates 2026-04-11T18:22:33Z Revision history for this page on the wiki MediaWiki 1.41.0 https://grasswiki.osgeo.org/w/index.php?title=HOWTO_get_centroid_coordinates&diff=20537&oldid=prev 2014-06-18T13:59:03Z

<p>FAQ : how to get centroid coordinates</p> <p><b>New page</b></p><div><br /> '''Q:''' I have a vector of polygons and I want to create a vector of points with the centroids of the polygons, with a connected table showing their coordinates. Which is the simplest way to do that?<br /> <br /> '''A:''' In Grass 6.4.x:<br /> <br /> # Extract centroids from polygon map<br /> v.extract in=poly out=centr type=centroid<br /> # If needed convert centroids to points<br /> v.type in=centr out=centr_pts type=centroid,point<br /> # Add attribute table to points<br /> v.db.addtable centr_pts col=&quot;x double,y double,z double&quot;<br /> # Insert coords in table<br /> v.to.db TMP_centr_pts option=coor col=x,y,z<br /> <br /> In Grass 7:<br /> <br /> v.out.ascii in=poly type=centroid<br /> <br /> [[Category:FAQ]]<br /> [[Category:HowTo]]<br /> [[Category:Vector]]</div>

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