[GRASS-user] problem with g.in.ogr

[Camille Bezzina]

Thanks a lot Markus for your help !

It works. :-)

Last question about that, the "verbose" says me that I have 57851input 
polygons but 58049 areas in output. Why this difference ?

How can I check if all polygons are imported ?




Le 18/04/2018 à 18:55, Markus Metz a écrit :
>
>
> On Wed, Apr 18, 2018 at 5:39 PM, Camille Bezzina 
> <camille.bezzina at geophom.fr <mailto:camille.bezzina at geophom.fr>> wrote:
> >
> > You can download the shapefile causing problems here : 
> https://we.tl/qByZnpMNvU
> >
> Thanks a lot!
>
> The input is 3D, and pairs of consecutive vertices are exactly on top 
> of each other. The data can be imported successfully with v.in.ogr -2, 
> forcing 2D output.
>
> In this case I don't understand (yet) why forcing 2D is necessary.
>
> Markus M
>
> >
> > Le 18/04/2018 à 17:30, Markus Metz a écrit :
> >
> >
> >
> > On Wed, Apr 18, 2018 at 5:27 PM, Camille Bezzina 
> <camille.bezzina at geophom.fr <mailto:camille.bezzina at geophom.fr>> wrote:
> > >
> > > Hi,
> > >
> > > I tried to import my vector with the latest version 7.4 and 
> testing snap=0.01or other values but there is always the same problem.
> > >
> > > I also tried with another shapefile (smaller) but it doen't change 
> anything.
> > >
> > > You can find the result in the attached file (verbose + .pdf). As 
> you can see, when I import a .shp, a lot of polygons desappear.
> >
> > Can you provide off-list (a link to) the shapefile causing problems? 
> Then we can test.
> >
> > Markus M
> >
> > >
> > > Camille
> > >
> > >
> > > Le 12/04/2018 à 18:20, Moritz Lennert a écrit :
> > >
> > > On 12/04/18 17:03, Camille Bezzina wrote:
> > >
> > > Hi Markus,
> > >
> > > In the file attached you can find the full output of v.import with 
> verbose.
> > >
> > > I launch this one with v.in.ogr and this is the answer.
> > >
> > >
> > > At the end you can see:
> > >
> > > "Some input polygons are overlapping each other.
> > > If overlapping is not desired, the data need to be cleaned.
> > > The input could be cleaned by snapping vertices to each other.
> > > Estimated range of snapping threshold: [1e-08, 1]
> > > Try to import again, snapping with at least 1e-08: 'snap=1e-08'"
> > >
> > > Try importing with snap=0.01 or something like that (depending on 
> the nature and precision of your data.
> > >
> > > Moritz
> > >
> > >
> > > Thanks.
> > >
> > >
> > >
> > > Le 12/04/2018 à 16:39, Markus Metz a écrit :
> > >
> > >
> > >
> > > On Thu, Apr 12, 2018 at 3:04 PM, Camille Bezzina 
> <camille.bezzina at geophom.fr <mailto:camille.bezzina at geophom.fr> 
> <mailto:camille.bezzina at geophom.fr 
> <mailto:camille.bezzina at geophom.fr>>> wrote:
> > > >
> > > > Hello all,
> > > >
> > > > I have a problem with v.in.ogr.
> > > > I would like to import a shape file (with 57851 polygons) with 
> v.in.ogr.
> > > >
> > > > v.import --verbose 
> input=/media/hdd1/phom/eolien/AIP_UNESCO_RONCHAMP/data/qgis/MNE/bati_D90_decoupe.shp 
> layer=bati_D90_decoupe output=bati_D90_decoupe -o
> > > >
> > > > Visibly the order is going well, my attribute table contains 
> 57851 attributes but when I check my vector with display, some 
> polygons are missing.
> > >
> > > Can you post the full output of v.import with --verbose?
> > >
> > > Considering that you override the projection check with -o, you 
> can also use v.in.ogr directly and then post the full output of 
> v.in.ogr -o --verbose.
> > >
> > > Markus M
> > >
> > > >
> > > > Thanks for your help.
> > > >
> > > > --
> > > > Camille Bezzina
> > > > Geophom
> > > > _______________________________________________
> > > > grass-user mailing list
> > > > grass-user at lists.osgeo.org <mailto:grass-user at lists.osgeo.org> 
> <mailto:grass-user at lists.osgeo.org <mailto:grass-user at lists.osgeo.org>>
> > > > https://lists.osgeo.org/mailman/listinfo/grass-user
> > >
> > >
> > > --
> > > Camille BEZZINA
> > > Chargé d'études géomatiques et photomontages
> > > Geophom
> > > 57 rue du Chemin Neuf 44521 OUDON
> > > Standard: +33(0)2 85 52 02 59
> > > Ligne directe: +33(0)9 72 56 81 71
> > > www.geophom.fr <http://www.geophom.fr>
> > >
> > >
> > > _______________________________________________
> > > grass-user mailing list
> > > grass-user at lists.osgeo.org <mailto:grass-user at lists.osgeo.org>
> > > https://lists.osgeo.org/mailman/listinfo/grass-user
> > >
> > >
> > >
> > >
> > > --
> > > Camille BEZZINA
> > > Chargé d'études géomatiques et photomontages
> > > Geophom
> > > 57 rue du Chemin Neuf 44521 OUDON
> > > Standard: +33(0)2 85 52 02 59
> > > Ligne directe: +33(0)9 72 56 81 71
> > > www.geophom.fr <http://www.geophom.fr>
> >
> >
> > --
> > Camille BEZZINA
> > Chargé d'études géomatiques et photomontages
> > Geophom
> > 57 rue du Chemin Neuf 44521 OUDON
> > Standard: +33(0)2 85 52 02 59
> > Ligne directe: +33(0)9 72 56 81 71
> > www.geophom.fr <http://www.geophom.fr>
>

-- 
Camille BEZZINA
Chargé d'études géomatiques et photomontages
Geophom
57 rue du Chemin Neuf 44521 OUDON
Standard: +33(0)2 85 52 02 59
Ligne directe: +33(0)9 72 56 81 71
www.geophom.fr
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