Re: [gdal-dev] To know about centriod of a polygon shape file
Siva, If you want to remove features with duplicate centroids, it is not safe to use the spatial filter directly. A centroid may lie outside the geometry. Make a duplicate layer using OGRDataSource::CopyLayer() and replace the geometry in each feature with its centroid. So, the duplicate layer will have all the corresponding centroids. Now you can loop through each feature in the original layer and then get coinciding points by applying a spatial filter on the duplicate layer. Let us know how it went. On Wed, Feb 20, 2013 at 12:04 PM, SIVA RAMA KRISHNA s.r.kriis...@gmail.comwrote: Chaitanya, Fine i got your point .I wanted to know when do different features have same centroids for removing duplicate centriods With Regards -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
Re: [gdal-dev] To know about centriod of a polygon shape file
Siva, Centroid of a polygon need not coincide with the centroid of it's buffer. On Tue, Feb 19, 2013 at 11:21 AM, SIVA RAMA KRISHNA s.r.kriis...@gmail.comwrote: Dear All, I am just working on Shape files I am unable to detect duplicate centroids in a shape file .After buffering a polygon does centroids of both will match Any help in greatly appreciated With Regards ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev -- Best regards, Chaitanya kumar CH. +91-9494447584 17.2416N 80.1426E ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
[gdal-dev] To know about centriod of a polygon shape file
Dear All, I am just working on Shape files I am unable to detect duplicate centroids in a shape file .After buffering a polygon does centroids of both will match Any help in greatly appreciated With Regards ___ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
