This may not be the simplest way but you could use mapserver to draw the polygon layer as a point layer (at the centroids) and then use the wfs export format capability to export back to shapefile.
Mike -- Michael Smith US Army Corps Remote Sensing GIS/Center From: Chaitanya kumar CH <[email protected]<mailto:[email protected]>> Date: Thu, 3 Nov 2011 08:12:39 +0530 To: katrin eggert <[email protected]<mailto:[email protected]>> Cc: gdal dev <[email protected]<mailto:[email protected]>> Subject: Re: [gdal-dev] Extract centroids That's exactly what I meant. None of the prebuilt utilities do that. You should try other desktop GIS programs like QGIS. On Thu, Nov 3, 2011 at 12:12 AM, katrin eggert <[email protected]<mailto:[email protected]>> wrote: Hi (again ! :) ) Ok you mean developing a function and use OGR library right? so none of the pre-built functions (e.g. ogr2ogr) is able to do that ? THanks Kat 2011/11/2 Chaitanya kumar CH <[email protected]<mailto:[email protected]>> katrin, You can programatically extract the centroids. You can use the OGR_G_Centroid() function on the geometry. On Thu, Nov 3, 2011 at 12:06 AM, katrin eggert <[email protected]<mailto:[email protected]>> wrote: Greetings Just one question: I tried to find in Google if GDAL could be used to extract polygons centroids. But I was not able to find anything. Is it possible? Kat _______________________________________________ gdal-dev mailing list [email protected]<mailto:[email protected]> http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584<tel:%2B91-9494447584> 17.2416N 80.1426E -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E _______________________________________________ gdal-dev mailing list [email protected]<mailto:[email protected]> http://lists.osgeo.org/mailman/listinfo/gdal-dev
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