Re: [Qgis-user] Check geometry validity tools
The uncorrected ring is visible in the map, but doesn't exist in the table! Alessio Il 05/09/2014 08:55, Bernhard Ströbl ha scritto: Hi, if you cannot select it graphically you should select it in the table Bernhard Am 05.09.2014 08:48, schrieb Alessio Degioannini: Yes. Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto: Have you enabled editing? Oiva Well: now i'm trying to select it for delete it, but it seems impossible Someone can help me? Best regards. Alessio ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user __ Information from ESET Mail Security, version of virus signature database 10369 (20140905) __ The message was checked by ESET Mail Security. http://www.eset.com __ Information from ESET Mail Security, version of virus signature database 10369 (20140905) __ The message was checked by ESET Mail Security. http://www.eset.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
you can try to repair it by means of LWGEOM plugin (https://www.youtube.com/watch?v=BqJbVh_OqCE) s. -- View this message in context: http://osgeo-org.1560.x6.nabble.com/Check-geometry-validity-tools-tp5160189p5160554.html Sent from the Quantum GIS - User mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
If you can't select that feature, can you select everything else and save the selection as a new file? On 05/09/2014 6:07 pm, "Alessio Degioannini" wrote: > Hi All, > as i have written in the first message, the polygon is a ring with less > then 4 points... > >> You may try to correct the invalid feature with the PlainGeometryEditor >> plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/ >> >> Here you can manually edit each ring and vertex by manipulating the >> coordinates in a text-field. >> > The polygon is not selectable, also in PlainGeometryEditor. > > Alessio > > * > Alessio Degioannini - dottore forestale > PROTER - Studio Associato Agronomico e Forestale > C.so Stati Uniti, 27 - 10128 TORINO (ITALY) > Tel: +39 011 817 0767 > Fax: +39 011 070 2382 > Cell.: +39 329 211 2781 > E-mail: a.degioann...@proterstudio.com > P.E.C.: a.degioann...@epap.conafpec.it > * > > Il 05/09/2014 09:13, Bernhard Ströbl ha scritto: > >> Hi Andreas, >> >> you maybe right. However we do not know :-) . I was under the impression >> it is a simple polygon with only one ring with less than 4 points. ring0 is >> the first (and if it is a plain polygon the only) ring, isn't it? >> >> Bernhard >> >> Am 05.09.2014 09:00, schrieb Andreas Neumann: >> >>> I think that Alessio is trying to select an invalid ring within a >>> polygon or multipolygon. This is not possible in the table. >>> >>> You may try to correct the invalid feature with the PlainGeometryEditor >>> plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/ >>> >>> Here you can manually edit each ring and vertex by manipulating the >>> coordinates in a text-field. >>> >>> Hope this helps, >>> Andreas >>> >>> Am 05.09.2014 06:55, schrieb Bernhard Ströbl: >>> Hi, if you cannot select it graphically you should select it in the table Bernhard Am 05.09.2014 08:48, schrieb Alessio Degioannini: > Yes. > > Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto: > >> Have you enabled editing? >> >> Oiva >> >> Well: now i'm trying to select it for delete it, but it seems >> impossible >> Someone can help me? >> Best regards. >> >> Alessio >> >> >> > >> >> __ Information from ESET Mail Security, version of virus >> signature database 10369 (20140905) __ >> >> The message was checked by ESET Mail Security. >> http://www.eset.com >> >> >> ___ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/qgis-user >> > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
Salvatore Larosa writes:
>
> please, if it is not a sensitive data would be useful if you could
> share a sample of the dataset.
> my guessing here is that you should run the make valid script (lwgeom
> algotithm by processing plugin) before.
Hi,
Such data are easy to acquire because OpenStreetMap has loads of three-point
(A-B-A) polygons. I have been trying to create such artificially sometimes
because they make trouble with most other software despite Mapnik but I
haven't been successful yet. It is impossible to digitize a three point
polygon with QGIS or OpenJUMP, and SQL that should yield A-B-A polygon leads
to "NULL" in Spatialite and to an error with PostGIS.
select geomfromtext('POLYGON ((0 0,1 1,0 0))');
-Jukka Rahkonen-
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Re: [Qgis-user] Check geometry validity tools
Hi Alessio, On Fri, Sep 5, 2014 at 10:06 AM, Alessio Degioannini wrote: > Hi All, > as i have written in the first message, the polygon is a ring with less then > 4 points... >> >> You may try to correct the invalid feature with the PlainGeometryEditor >> plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/ >> >> Here you can manually edit each ring and vertex by manipulating the >> coordinates in a text-field. > > The polygon is not selectable, also in PlainGeometryEditor. please, if it is not a sensitive data would be useful if you could share a sample of the dataset. my guessing here is that you should run the make valid script (lwgeom algotithm by processing plugin) before. Best Regards, -SL -- Salvatore Larosa linkedIn: http://linkedin.com/in/larosasalvatore twitter: @lrssvt skype: s.larosa IRC: lrssvt on freenode ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
Hi All, as i have written in the first message, the polygon is a ring with less then 4 points... You may try to correct the invalid feature with the PlainGeometryEditor plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/ Here you can manually edit each ring and vertex by manipulating the coordinates in a text-field. The polygon is not selectable, also in PlainGeometryEditor. Alessio * Alessio Degioannini - dottore forestale PROTER - Studio Associato Agronomico e Forestale C.so Stati Uniti, 27 - 10128 TORINO (ITALY) Tel: +39 011 817 0767 Fax: +39 011 070 2382 Cell.: +39 329 211 2781 E-mail: a.degioann...@proterstudio.com P.E.C.: a.degioann...@epap.conafpec.it * Il 05/09/2014 09:13, Bernhard Ströbl ha scritto: Hi Andreas, you maybe right. However we do not know :-) . I was under the impression it is a simple polygon with only one ring with less than 4 points. ring0 is the first (and if it is a plain polygon the only) ring, isn't it? Bernhard Am 05.09.2014 09:00, schrieb Andreas Neumann: I think that Alessio is trying to select an invalid ring within a polygon or multipolygon. This is not possible in the table. You may try to correct the invalid feature with the PlainGeometryEditor plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/ Here you can manually edit each ring and vertex by manipulating the coordinates in a text-field. Hope this helps, Andreas Am 05.09.2014 06:55, schrieb Bernhard Ströbl: Hi, if you cannot select it graphically you should select it in the table Bernhard Am 05.09.2014 08:48, schrieb Alessio Degioannini: Yes. Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto: Have you enabled editing? Oiva Well: now i'm trying to select it for delete it, but it seems impossible Someone can help me? Best regards. Alessio __ Information from ESET Mail Security, version of virus signature database 10369 (20140905) __ The message was checked by ESET Mail Security. http://www.eset.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
Hi Andreas, you maybe right. However we do not know :-) . I was under the impression it is a simple polygon with only one ring with less than 4 points. ring0 is the first (and if it is a plain polygon the only) ring, isn't it? Bernhard Am 05.09.2014 09:00, schrieb Andreas Neumann: I think that Alessio is trying to select an invalid ring within a polygon or multipolygon. This is not possible in the table. You may try to correct the invalid feature with the PlainGeometryEditor plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/ Here you can manually edit each ring and vertex by manipulating the coordinates in a text-field. Hope this helps, Andreas Am 05.09.2014 06:55, schrieb Bernhard Ströbl: Hi, if you cannot select it graphically you should select it in the table Bernhard Am 05.09.2014 08:48, schrieb Alessio Degioannini: Yes. Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto: Have you enabled editing? Oiva Well: now i'm trying to select it for delete it, but it seems impossible Someone can help me? Best regards. Alessio __ Information from ESET Mail Security, version of virus signature database 10369 (20140905) __ The message was checked by ESET Mail Security. http://www.eset.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
I think that Alessio is trying to select an invalid ring within a polygon or multipolygon. This is not possible in the table. You may try to correct the invalid feature with the PlainGeometryEditor plugin: https://plugins.qgis.org/plugins/plaingeometryeditor/ Here you can manually edit each ring and vertex by manipulating the coordinates in a text-field. Hope this helps, Andreas Am 05.09.2014 06:55, schrieb Bernhard Ströbl: > Hi, > if you cannot select it graphically you should select it in the table > > Bernhard > > Am 05.09.2014 08:48, schrieb Alessio Degioannini: >> Yes. >> >> Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto: >>> Have you enabled editing? >>> >>> Oiva >>> >>> Well: now i'm trying to select it for delete it, but it seems >>> impossible >>> Someone can help me? >>> Best regards. >>> >>> Alessio >>> >>> >> >> ___ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/qgis-user >> >> >> __ Information from ESET Mail Security, version of virus >> signature database 10369 (20140905) __ >> >> The message was checked by ESET Mail Security. >> http://www.eset.com >> >> > > > > __ Information from ESET Mail Security, version of virus > signature database 10369 (20140905) __ > > The message was checked by ESET Mail Security. > http://www.eset.com > > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
Hi, if you cannot select it graphically you should select it in the table Bernhard Am 05.09.2014 08:48, schrieb Alessio Degioannini: Yes. Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto: Have you enabled editing? Oiva Well: now i'm trying to select it for delete it, but it seems impossible Someone can help me? Best regards. Alessio ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user __ Information from ESET Mail Security, version of virus signature database 10369 (20140905) __ The message was checked by ESET Mail Security. http://www.eset.com __ Information from ESET Mail Security, version of virus signature database 10369 (20140905) __ The message was checked by ESET Mail Security. http://www.eset.com ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Check geometry validity tools
Yes. Il 05/09/2014 08:02, Hakala Oiva (MTT) ha scritto: Have you enabled editing? Oiva Well: now i'm trying to select it for delete it, but it seems impossible Someone can help me? Best regards. Alessio ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Check geometry validity tools
Hello, I have checked geometry validity on a polygonal layer. It returns this error: "ring 0 with less then 4 nodes" and it shows the uncorrected ring. Great! Well: now i'm trying to select it for delete it, but it seems impossible Someone can help me? Best regards. Alessio ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
