>I don't know which tool you used in QGIS, it's quite easy in QGIS, just open the attribute table for editing and type
x (centroid( $geometry )) y (centroid( $geometry )) in the calculator for calculating the centroid coordinates. >but GRASS' centroids are not >guaranteed to be the geometrical centroid (aka "center of gravity" which >could sometimes fall outside the polygon). ah yes, you're right. >You might want to compare the >results of QGIS with those of the addon v.centerpoint. v.centerpoint input=testcalculate output=testcalculate_center_of_gravity v.db.select map=testcalculate_center_of_gravity columns=x,y,x3,y3 x|y|x3|y3 9.8489673562|47.0568937369|9.8489673562097|47.0568937369153 11.8802743895|46.9879350674|11.880274389498|46.9879350674375 9.7422504597|46.163754262|9.74225045972473|46.1637542620065 yes, GRASS' "center of gravity" (x3,y3) and QGIS centroids (x,y) are the same. thanks ----- best regards Helmut -- View this message in context: http://osgeo-org.1560.x6.nabble.com/easy-way-to-load-x-y-of-centroid-and-top-bottom-left-right-coordinates-to-attribute-table-tp5305135p5305180.html Sent from the Grass - Dev mailing list archive at Nabble.com. _______________________________________________ grass-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-dev
