<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body bgcolor="#FFFFFF" text="#333333">
Le 02/11/2018 à 14:43, Markus Metz a écrit :<br>
<blockquote type="cite"
cite="mid:CAG+h=FEs1kA8rLKLHzHwVN_GHmh1Z0QV6+GrPYsTg_go+yU1_A@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr"><br>
<br>
On Fri, Nov 2, 2018 at 11:58 AM Frank David <<a
href="mailto:frank.david@geophom.fr" moz-do-not-send="true">frank.david@geophom.fr</a>>
wrote:<br>
><br>
> Le 31/10/2018 à 20:57, Markus Metz a écrit :<br>
><br>
> Hi Frank,<br>
><br>
> On Wed, Oct 31, 2018 at 1:39 PM Frank David <<a
href="mailto:frank.david@geophom.fr" moz-do-not-send="true">frank.david@geophom.fr</a>>
wrote:<br>
> ><br>
> > Hello Vero,<br>
> ><br>
> > 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...<br>
><br>
> this kind of operation could be much faster in latest GRASS
7.4 than in any previous versions. Which GRASS version are you
using?<br>
><br>
> Hello Markus,<br>
><br>
> I'm using 7.4.1 on debian9<br>
><br>
<div>> But my grass db folder is on a small server (Synology
NAS), so may be the network makes slow down the operation ?</div>
<div><br>
</div>
<div>This is possible, but it should not slow it down that much:
10 min vs 1 hour</div>
<div><br>
</div>
<div>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.</div>
</div>
</blockquote>
<p>Markus,<br>
</p>
<p>The data is CorineLandCover for france. You can download 400mo
here > <a class="moz-txt-link-freetext" href="https://we.tl/t-tvldlmkVw3">https://we.tl/t-tvldlmkVw3</a></p>
<p>First I have imported the shape in PERMANENT</p>
<p>and I do : v.extract --verbose input=CLC12_FR_RGF@PERMANENT
where=CODE_12 IN (111,112,131,311,312,313,324) output=clc12</p>
<p>Hope it helps you...</p>
<p>Cheers,<br>
Frank<br>
</p>
<blockquote type="cite"
cite="mid:CAG+h=FEs1kA8rLKLHzHwVN_GHmh1Z0QV6+GrPYsTg_go+yU1_A@mail.gmail.com">
<div dir="ltr">
<div><br>
</div>
<div>Markus M<br>
</div>
><br>
> Cheers,<br>
> Frank<br>
><br>
><br>
> Markus M<br>
> ><br>
> > Cheers,<br>
> ><br>
> > Frank<br>
> ><br>
> > Le 31/10/2018 à 11:26, Veronica Andreo a écrit :<br>
> ><br>
> > Check v.extract or v.clip<br>
> ><br>
> > Cheers,<br>
> > Vero<br>
> ><br>
> > El mié., 31 oct. 2018 7:20, Frank David <<a
href="mailto:frank.david@geophom.fr" moz-do-not-send="true">frank.david@geophom.fr</a>>
escribió:<br>
> >><br>
> >> Hello,<br>
> >><br>
> >> What is the best and fast way to make a copy of a
part of vector map<br>
> >> (national) to get a smaller territory ? (partial
copy).<br>
> >> Thank you for your advice !<br>
> >><br>
> >> Frank<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"
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></div>
</blockquote>
</body>
</html>