On 27/03/12 00:03, Stephen Sefick wrote:
All:
I would like to merge seven or so vector objects with similar attribute
tables. The categories are duplicated and this poses a problem for the
finished map. It does not show an attribute data. How can I get this to
work? Any help would be greatly appreciated.
You can run v.category with option=sum and a different value in the
cat= parameter for each of the 7 maps, i.e.
v.category map1 option=sum cat=100
v.category map2 option=sum cat=200
etc
with the value for cat= obviously depending on how many categories you
have in each map.
Once that's done you can patch without fearing duplicate category values.
Maybe v.patch could be enhanced in a way to solve that problem
internally. You can file a wish and see if someone picks it up.
Moritz
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