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<p>Le 26/10/2018 à 21:11, Markus Metz a écrit :</p>
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cite="mid:CAG+h=FFwhNd2HOsYUc-iXPb0PhKJiKSrB_ar8BzUkQNXOCA74Q@mail.gmail.com">
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On Fri, Oct 26, 2018 at 7:17 PM Frank David <<a
href="mailto:frank.david@geophom.fr" moz-do-not-send="true">frank.david@geophom.fr</a>>
wrote:<br>
><br>
> Thank you Markus,<br>
><br>
<div>> 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.</div>
<div><br>
</div>
<div>If you want to preserve attribute values, use v.patch -e,
otherwise don't use the -e flag, but then you might get
duplicate category values.</div>
<div><br>
</div>
<div>v.patch -c should not work because -c is not a recognised
flag. Which GRASS version did you use with v.patch -c?<br>
</div>
</div>
</blockquote>
<p>I'm sorry, when I wrote -c it was -e of course ! I'm using Grass
7.4.1</p>
<p>But even with -e, as I wrote, the cat of the second file is shift
by one... (?)<br>
</p>
<p>I have used -e because I need to add my attribute table from both
file. But I had imagine to keep cat relation with data, but it's
may be better to add a id field ? is there any way to increment a
unique key automatically when data are appended ?</p>
<p>Frank<br>
</p>
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cite="mid:CAG+h=FFwhNd2HOsYUc-iXPb0PhKJiKSrB_ar8BzUkQNXOCA74Q@mail.gmail.com">
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<div>Markus M<br>
</div>
><br>
> Frank<br>
><br>
> Le 26/10/2018 à 18:44, Markus Metz a écrit :<br>
><br>
><br>
><br>
> On Fri, Oct 26, 2018 at 2:26 PM Frank David <<a
href="mailto:frank.david@geophom.fr" moz-do-not-send="true">frank.david@geophom.fr</a>>
wrote:<br>
> ><br>
> > I reply to myself,<br>
> ><br>
> > I mistook, if I append, I see a cat shift too. The
fisrt cat of the<br>
> > second map is shift by one. It's strange no ?<br>
><br>
> 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.<br>
><br>
> Markus M<br>
> ><br>
> > Frank<br>
> ><br>
> > Le 26/10/2018 à 14:17, Frank David a écrit :<br>
> ><br>
> > > Hi Stephan,<br>
> > ><br>
> > > If I add two vector in a new one with :<br>
> > ><br>
> > > v.patch -c input=map1,map2 out=map3<br>
> > ><br>
> > > I notice the map3 first cat start at 2 instead of
1, so all cat are<br>
> > > shifted by one. Do you have an idea of the reason
?<br>
> > ><br>
> > > If I append my map1 with map2 :<br>
> > ><br>
> > > v.patch -c -a input=map2 output=map1 --overwrite
it works well<br>
> > ><br>
> > > Thank you<br>
> > ><br>
> > > Frank<br>
> > ><br>
> > > Le 26/10/2018 à 12:01, Stefan Blumentrath a écrit
:<br>
> > >> Hi,<br>
> > >><br>
> > >> Try:<br>
> > >> v.patch -a<br>
> > >> <a
href="https://grass.osgeo.org/grass76/manuals/v.patch.html"
moz-do-not-send="true">https://grass.osgeo.org/grass76/manuals/v.patch.html</a><br>
> > >><br>
> > >> (assuming attribute tables are equal).<br>
> > >><br>
> > >> Cheers<br>
> > >> Stefan<br>
> > >><br>
> > >> -----Original Message-----<br>
> > >> From: grass-user<<a
href="mailto:grass-user-bounces@lists.osgeo.org"
moz-do-not-send="true">grass-user-bounces@lists.osgeo.org</a>>
On Behalf Of Frank David<br>
> > >> Sent: fredag 26. oktober 2018 11:39<br>
> > >> <a
href="mailto:To%3Agrass-user@lists.osgeo.org"
moz-do-not-send="true">To:grass-user@lists.osgeo.org</a><br>
> > >> Subject: [GRASS-user] append data after a
v.in.ascii import<br>
> > >><br>
> > >> Hello,<br>
> > >><br>
> > >> I wonder what is the best way to append a
vector map and his attribute data created with v.in.ascii ?<br>
> > >><br>
> > >> Thanks<br>
> > >><br>
> > >> Frank<br>
> > >><br>
> > >>
_______________________________________________<br>
> > >> grass-user mailing list<br>
> > >> <a href="mailto:grass-user@lists.osgeo.org"
moz-do-not-send="true">grass-user@lists.osgeo.org</a><br>
> > >> <a
href="https://lists.osgeo.org/mailman/listinfo/grass-user"
moz-do-not-send="true">https://lists.osgeo.org/mailman/listinfo/grass-user</a><br>
> > ><br>
> > > _______________________________________________<br>
> > > grass-user mailing list<br>
> > > <a href="mailto:grass-user@lists.osgeo.org"
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> > _______________________________________________<br>
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