Hi, 2008/8/23 Markus Neteler <[EMAIL PROTECTED]>: > On Thu, Aug 21, 2008 at 6:54 PM, Benjamin Ducke > <[EMAIL PROTECTED]> wrote: >> I am struggling to understand how to delete an object, including its >> attached attributes, from a GRASS vector map. >> >> I open the map with: >> >> Vect_open_update ( &Map, MAPS[i].tempname, mapset ); >> >> Then I find the category IDs of the objects I want to delete and then I >> do: >> >> Vect_delete_line ( &Map, cat ); >> Vect_field_cat_del ( Cats, field, cat );
the second argument of Vect_delete_line() is feature id not category. Feature ids start at 1. You get number of features by Vect_get_num_lines(). Good luck, Martin -- Martin Landa <landa.martin gmail.com> * http://gama.fsv.cvut.cz/~landa * _______________________________________________ grass-dev mailing list grass-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-dev
