[GRASS-user] v.patch and keeping the attributes

[Markus Metz]

On Tue, Oct 30, 2018 at 9:13 PM Markus Neteler <neteler at osgeo.org> wrote:
>
> On Tue, Oct 30, 2018 at 5:36 PM Markus Neteler <neteler at osgeo.org> wrote:
> > On Tue, Oct 30, 2018 at 10:26 AM Mira Kattwinkel:
> > >
> > > Thanks a lot!
> > >
> > > I just did not interpret the paragraph  "When using the -a flag..."
correctly.
> > >
> > > Maybe a note in the manual that v.patch takes care of the cats etc.
would be helpful.
> >
> > if you could send a (draft) text addition to me, I'll merge it into the
manual.
>
> Based on Mira's offlist sent text snippet, I would add this text under
"NOTES":
>
> "When using the -e flag, v.patch assigns new, unique category (cat)
> values so that no overlapping category numbers  occur  in  the
> output. Hence, there is no need to run v.category beforehand."
>
> Is that correct?

How about:
"When using the -e flag, v.patch shifts category (cat) values in the output
so that category numbers from the different input maps do not overlap. This
shift is applied to both the category values of the features and the
category values in the attribute tables. Hence, there is no need to run
v.category and v.db.update beforehand."

Markus M
>
> thanks
> markusN
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