v.flip is a Bourne Shell and Awk script. The output vector map contains all lines that have a category in the given layer of the input vector map. Lines specified in cat have their direction flipped.

The input layer number and category numbers are preserved in the output. If a datatable is attatched to the input vector map's layer, it will be copied under the output vector map's name and connected to the output vector map, in the same database where the input layer's table is stored.


v.flip was tested only in metric Locations. I can't guarantee it will work properly in latlong or unprojected xy Locations, as v.clean is used internally with a fixed snapping distance of 0.0001 for connecting flipped and non-flipped lines.


v.category, v.clean


Maciej Sieczka

Last changed: $Date$