[GRASS-user] how to change all cats in a vector line

Helmut Kudrnovsky hellik at web.de
Mon Dec 1 11:52:13 PST 2014


>But I’ve tried using cat=first and it continues to assign multiple cats to
the segments. 

tested here on my side.

from the manual:

    cats=no - No category number is assigned to a polyline. Also attributes
tables linked to the input vector map are not copied to the output vector
map.
    cats=first - Assign to a polyline category number of the first line. All
linked attributes tables are copied to the output vector map.
    cats=multi - If the lines that make up a polyline have different
category numbers then v.build.polylines will set the multiple catetory
numbers to a polyline. Also all linked attributes tables are copied to the
output vector map.

none of this options seems to work, as always all cats are copied to the
attribute table.

bug in v.build.polylines?



-----
best regards
Helmut
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