#831: v.category options sum, del, and add do nothing --------------------------+------------------------------------------------- Reporter: isaacullah | Owner: [email protected] Type: enhancement | Status: reopened Priority: major | Milestone: 7.0.0 Component: Vector | Version: svn-develbranch6 Resolution: | Keywords: v.category Platform: All | Cpu: All --------------------------+------------------------------------------------- Comment (by martinl):
Replying to [comment:4 cmbarton]: > This is worth keeping open as an enhancement request rather than a defect. v.category dates to an era when vectors did not routinely have attribute tables, but only cat and label values like rasters. v.category is dedicated for modifying category values in 'coor' (geometry) file, it's not touching attribute data. > For vectors with attribute tables, v.category becomes highly problematic. If it alters the cat values without altering the corresponding cat values in the associated attribute table, all links between the vector objects and their attribute data are irretrievably lost (or lost with out a great amount of work to retrieve them). Use `v.to.db option=cat` to add new records to attribute table. > My suggestion is to add a flag that will allow v.category to simultaneously change the cat value in the vector AND the corresponding cat in the linked attribute table of same layer. v.category should do one thing - to manage layer/categories in geometry file. > Because this enhancement request is a change in functionality, I've also bumped this to milestone 7.0 I would not incline to modify v.category in this way. -- Ticket URL: <http://trac.osgeo.org/grass/ticket/831#comment:5> GRASS GIS <http://grass.osgeo.org>
_______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
