On Fri, Oct 26, 2018 at 2:26 PM Frank David <[email protected]> wrote: > > I reply to myself, > > I mistook, if I append, I see a cat shift too. The fisrt cat of the > second map is shift by one. It's strange no ?
Suppose there is a feature with cat 1 in map A and a feature also with cat 1 in map B, but corresponding attribute values for cat 1 are different between map A and map B. In order to avoid such conflicts, v.patch shifts category values and updates the resultant attribute table accordingly, such that attributes for each feature are preserved. Markus M > > Frank > > Le 26/10/2018 à 14:17, Frank David a écrit : > > > Hi Stephan, > > > > If I add two vector in a new one with : > > > > v.patch -c input=map1,map2 out=map3 > > > > I notice the map3 first cat start at 2 instead of 1, so all cat are > > shifted by one. Do you have an idea of the reason ? > > > > If I append my map1 with map2 : > > > > v.patch -c -a input=map2 output=map1 --overwrite it works well > > > > Thank you > > > > Frank > > > > Le 26/10/2018 à 12:01, Stefan Blumentrath a écrit : > >> Hi, > >> > >> Try: > >> v.patch -a > >> https://grass.osgeo.org/grass76/manuals/v.patch.html > >> > >> (assuming attribute tables are equal). > >> > >> Cheers > >> Stefan > >> > >> -----Original Message----- > >> From: grass-user<[email protected]> On Behalf Of Frank David > >> Sent: fredag 26. oktober 2018 11:39 > >> To:[email protected] > >> Subject: [GRASS-user] append data after a v.in.ascii import > >> > >> Hello, > >> > >> I wonder what is the best way to append a vector map and his attribute data created with v.in.ascii ? > >> > >> Thanks > >> > >> Frank > >> > >> _______________________________________________ > >> grass-user mailing list > >> [email protected] > >> https://lists.osgeo.org/mailman/listinfo/grass-user > > > > _______________________________________________ > > grass-user mailing list > > [email protected] > > https://lists.osgeo.org/mailman/listinfo/grass-user > _______________________________________________ > grass-user mailing list > [email protected] > https://lists.osgeo.org/mailman/listinfo/grass-user
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