[GRASS-user] partial vector copy to smaller territory

[Markus Metz]

On Fri, Nov 2, 2018 at 11:58 AM Frank David <frank.david at geophom.fr> wrote:
>
> Le 31/10/2018 à 20:57, Markus Metz a écrit :
>
> Hi Frank,
>
> On Wed, Oct 31, 2018 at 1:39 PM Frank David <frank.david at geophom.fr>
wrote:
> >
> > Hello Vero,
> >
> > Thanks for your reply. It took almost one hour to extract my area (I
guess because of topology). I do the same with Qgis from a shape in less
than 10 minutes (but with several operations)... it's may be a bad idea to
have a so heavy vector map in Grass...
>
> this kind of operation could be much faster in latest GRASS 7.4 than in
any previous versions. Which GRASS version are you using?
>
> Hello Markus,
>
> I'm using 7.4.1 on debian9
>
> But my grass db folder  is on a small server (Synology NAS), so may be
the network makes slow down the operation ?

This is possible, but it should not slow it down that much: 10 min vs 1 hour

Can you provide a link to the vector from which you want to extract a small
area, and the command you used to extract a small area? Maybe there is
scope for optimization.

Markus M
>
> Cheers,
> Frank
>
>
> Markus M
> >
> > Cheers,
> >
> > Frank
> >
> > Le 31/10/2018 à 11:26, Veronica Andreo a écrit :
> >
> > Check v.extract or v.clip
> >
> > Cheers,
> > Vero
> >
> > El mié., 31 oct. 2018 7:20, Frank David <frank.david at geophom.fr>
escribió:
> >>
> >> Hello,
> >>
> >> What is the best and fast way to make a copy of a part of vector map
> >> (national) to get a smaller territory ? (partial copy).
> >> Thank you for your advice !
> >>
> >> Frank
> >> _______________________________________________
> >> grass-user mailing list
> >> grass-user at lists.osgeo.org
> >> https://lists.osgeo.org/mailman/listinfo/grass-user
> >
> > _______________________________________________
> > grass-user mailing list
> > grass-user at lists.osgeo.org
> > https://lists.osgeo.org/mailman/listinfo/grass-user
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-user/attachments/20181102/7d039df2/attachment.html>