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

[Mira Kattwinkel]

Sounds good and precise to me.

Mira

On 30/10/2018 21:34, Markus Metz wrote:
>
>
> On Tue, Oct 30, 2018 at 9:13 PM Markus Neteler <neteler at osgeo.org 
> <mailto:neteler at osgeo.org>> wrote:
> >
> > On Tue, Oct 30, 2018 at 5:36 PM Markus Neteler <neteler at osgeo.org 
> <mailto: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

-- 
Dr. Mira Kattwinkel
Quantitative Landscape Ecology
Institute for Environmental Sciences
University of Koblenz-Landau
Fortstraße 7
76829 Landau
Germany
Phone: + 49 6341 280-31553
Office: Building I, Room 2.02

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