Hi, I hope the questions to come are not too stupid, but I need some help about some points that remain to me unclear about vector layers & category management :
Let's take the case of a point vector produced by v.to.point module. You know this command creates a 2 layers vector, consisting in: - 2 distinct tables, - 2 sets of categories. The first point is when removing a layer, categories associated with this layer /remain/ attached to the geometry. Should I purge categories from the layer I want to delete (with v.category command) prior to remove layer ? When I remove layer 1, trying to query layer 2 points in wxGUI display window, the result appears in the terminal but the classical pop-up does not rise (whatever "layer" parameter in d.vect). Then I try to change layer "2" to number "1" (v.category with option=chlayer layer=2,1). The command performs without apparent problem, but v.to.db -p tells me the expected layer 1 is still number 2... In a word, all this is very confusing. Could anyone help me to point at what is going wrong, either in my understanding of attribute handling or in possible issues in the commands I use (v.to.db, v.category) Thanks, Vincent _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
