Thank you Markus,
Is a feature could be created without a row data ?, because the two
maps have been created with a v.in.ascii from a text file, so it means
that one object by row has been created. For both of my two maps.
Frank
Le 26/10/2018 à 18:44, Markus Metz a écrit :
On Fri, Oct 26, 2018 at 2:26 PM Frank David <frank.da...@geophom.fr
<mailto:frank.da...@geophom.fr>> 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<grass-user-boun...@lists.osgeo.org
<mailto:grass-user-boun...@lists.osgeo.org>> On Behalf Of Frank David
> >> Sent: fredag 26. oktober 2018 11:39
> >> To:grass-user@lists.osgeo.org
<mailto:to%3agrass-u...@lists.osgeo.org>
> >> 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
> >>
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> >
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