Re: [Qgis-user] split polygon with lines seems not working correctly
Hi Luigi, I think you can proceed this way: - using the "Polygons to lines" tool, convert your the polygon layer (building.shp) to lines - using the "Merge vector layers" tool, merge your line layer (line.shp) and the layer generated by the previous step - using the "Polygonize" tool, create a new polygon layer from the layer generate by the previous step As a side note, it seems to me that the reference system of your layers is wrong: it is set as geographic 4326:WGS84 but the coordinates of the vertices are clearly in meters and not in degrees, so it should be a projected coordinate system like an UTM one. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-User-f4125267.html ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] split polygon with lines seems not working correctly
Luigi, I see the problem now, I would suggest: 1. Polygons to Lines (on the Buildings layer) 2. Merge vector Layers (lines-from-buildings, and line layer) 3. Polygonize (merged layer) 4. Join Attributes from Location (New polygons, building layer) (Geometric predicate = within) David On 6/10/2020 11:31 AM, Luigi Raffaele Sapone wrote: Hello I’m using QGIS 3.12 I have a poly shapefile named building.shp in the zip file, and a line shapefile, named line.shp. I’m using the geoprocessing function ‘split polygon by line’ using poly.shp as input, and line.shp as divide layer. I obtain the ‘split_by_line.shp’. But, in this splitted file, the polygon was not divided considering all the lines present, but only some of them, as visible in ‘split_by_line.shp’. Is there something wrong? Regards ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] split polygon with lines seems not working correctly
Luigi and list, On Wed, Jun 10, 2020 at 8:32 AM Luigi Raffaele Sapone < studioingsap...@live.com> wrote: > Hello > > I’m using QGIS 3.12 > > I have a poly shapefile named building.shp in the zip file, and a line > shapefile, named line.shp. > > I’m using the geoprocessing function ‘split polygon by line’ using > poly.shp as input, and line.shp as divide layer. > > I obtain the ‘split_by_line.shp’. But, in this splitted file, the polygon > was not divided considering all the lines present, but only some of them, > as visible in ‘split_by_line.shp’. > > Is there something wrong? > > > Feeling like the "you must use polygons ogre" here... If you union your split lines and building lines and create polygons from that result, then you have all the space-enclosing polygons you need. You can transfer the attributes from the original buildings polygons to these new "sub-building" polygons. -- Chris Hermansen · clhermansen "at" gmail "dot" com C'est ma façon de parler. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] split polygon with lines seems not working correctly
ersonally I am not aware that we arranged > something with them? > > We use osgeo-mailing lists, I'm not aware of any changes recently. > Are other mailing lists affected? Hi Stefano and Richard, all the OSGeo ML were affected. I sent an e-mail message to the OSGeo Nabble Admin two days ago, and after a few attempts, now it's allowed to post new message or replay to messages via Nabble again. Regards Andrea Giudiceandrea -- Sent from: https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fosgeo-org.1560.x6.nabble.com%2FQGIS-User-f4125267.htmldata=02%7C01%7C%7C14f8af4905d04a9baabd08d80d6020a4%7C84df9e7fe9f640afb435%7C1%7C0%7C637274053798296317sdata=RUvniJw%2BrnEcBfZr%2F%2FSjdb3xSXhrrIt4F1cahY2uCh0%3Dreserved=0 -- Message: 3 Date: Wed, 10 Jun 2020 12:15:25 +0200 From: r.cho...@hotmail.com To: Richard McDonnell Cc: qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] Cut shapefiles Message-ID: Content-Type: text/plain; charset="utf-8" An HTML attachment was scrubbed... URL: <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.osgeo.org%2Fpipermail%2Fqgis-user%2Fattachments%2F20200610%2F918813cc%2Fattachment-0001.htmldata=02%7C01%7C%7C14f8af4905d04a9baabd08d80d6020a4%7C84df9e7fe9f640afb435%7C1%7C0%7C637274053798296317sdata=7eTm396zukzDyE89GW%2BVHn%2BfUoN5Hra56am51cEdndA%3Dreserved=0> -- Message: 4 Date: Wed, 10 Jun 2020 04:01:52 -0700 (MST) From: Andrea Giudiceandrea To: qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] QGIS mailing lists in NABBLE Message-ID: <1591786912755-0.p...@n6.nabble.com> Content-Type: text/plain; charset=us-ascii Andrea Giudiceandrea wrote > now it's allowed to post new message or replay to messages via Nabble > again. Actually... with the exception, form QGIS MLs, of QGIS Italian User (qgis-it-user) and QGIS - Community Team (qgis-community-team). For the former, Jorge Sanz. the OSGeo Nabble Admin, said that the Italian group apparently had more restrictive settings so he decided to keep them untouched, for the latter, I don't know why but maybe due to the same reason. Regards. Andrea -- Sent from: https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fosgeo-org.1560.x6.nabble.com%2FQGIS-User-f4125267.htmldata=02%7C01%7C%7C14f8af4905d04a9baabd08d80d6020a4%7C84df9e7fe9f640afb435%7C1%7C0%7C637274053798296317sdata=RUvniJw%2BrnEcBfZr%2F%2FSjdb3xSXhrrIt4F1cahY2uCh0%3Dreserved=0 ------ Message: 5 Date: Wed, 10 Jun 2020 15:31:09 + From: Luigi Raffaele Sapone To: "qgis-user@lists.osgeo.org" Subject: [Qgis-user] split polygon with lines seems not working correctly Message-ID: Content-Type: text/plain; charset="utf-8" Hello I'm using QGIS 3.12 I have a poly shapefile named building.shp in the zip file, and a line shapefile, named line.shp. I'm using the geoprocessing function 'split polygon by line' using poly.shp as input, and line.shp as divide layer. I obtain the 'split_by_line.shp'. But, in this splitted file, the polygon was not divided considering all the lines present, but only some of them, as visible in 'split_by_line.shp'. Is there something wrong? Regards -- next part -- An HTML attachment was scrubbed... URL: <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.osgeo.org%2Fpipermail%2Fqgis-user%2Fattachments%2F20200610%2Fcf19775c%2Fattachment-0001.htmldata=02%7C01%7C%7C14f8af4905d04a9baabd08d80d6020a4%7C84df9e7fe9f640afb435%7C1%7C0%7C637274053798296317sdata=PxjOXbo7q1SgHazLBleI%2FDYfI5mUYUmAdFMFEgoQNco%3Dreserved=0> -- next part -- A non-text attachment was scrubbed... Name: temp.zip Type: application/x-zip-compressed Size: 5329 bytes Desc: temp.zip URL: <https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.osgeo.org%2Fpipermail%2Fqgis-user%2Fattachments%2F20200610%2Fcf19775c%2Fattachment-0001.bindata=02%7C01%7C%7C14f8af4905d04a9baabd08d80d6020a4%7C84df9e7fe9f640afb435%7C1%7C0%7C637274053798296317sdata=nkGDS4GHMBGGjmdPXE2UpuPdZMmxUeiJ2CxOrR1c1%2Fo%3Dreserved=0> -------------- Message: 6 Date: Wed, 10 Jun 2020 12:56:46 -0400 From: David Greenewalt To: qgis-user@lists.osgeo.org Subject: Re: [Qgis-user] split polygon with lines seems not working correctly Message-ID: <95389106-835d-3eaf-cf5f-ca255c8f0...@sover.net> Content-Type: text/plain; charset="windows-1252"; Format="flowed" Luigi, The lines must fully transect the polygon in order to split. The dotted lines in the image are examples of such lines. Hope this helps, David On 6/10/2020 11:31 AM, Luigi Raffaele Sapone wrote: > > Hello > > I’m using QGIS 3.12 > > I have a poly shapefile named building.shp in the zi
Re: [Qgis-user] split polygon with lines seems not working correctly
Luigi, The lines must fully transect the polygon in order to split. The dotted lines in the image are examples of such lines. Hope this helps, David On 6/10/2020 11:31 AM, Luigi Raffaele Sapone wrote: Hello I’m using QGIS 3.12 I have a poly shapefile named building.shp in the zip file, and a line shapefile, named line.shp. I’m using the geoprocessing function ‘split polygon by line’ using poly.shp as input, and line.shp as divide layer. I obtain the ‘split_by_line.shp’. But, in this splitted file, the polygon was not divided considering all the lines present, but only some of them, as visible in ‘split_by_line.shp’. Is there something wrong? Regards ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] split polygon with lines seems not working correctly
Hello I'm using QGIS 3.12 I have a poly shapefile named building.shp in the zip file, and a line shapefile, named line.shp. I'm using the geoprocessing function 'split polygon by line' using poly.shp as input, and line.shp as divide layer. I obtain the 'split_by_line.shp'. But, in this splitted file, the polygon was not divided considering all the lines present, but only some of them, as visible in 'split_by_line.shp'. Is there something wrong? Regards <> ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
