[Qgis-user] Removal of overlap geometries within the same layer - merge to largest neighbor polygon

2023-07-25 Thread Andreas Neumann via QGIS-User
Hi, A friend of mine has a dirty input data set with lots of overlapping geometries (within the same layer) and asked me if there is a tool within QGIS to automatically remove the overlaps and assign the overlapping area to the neighbor polygon with the largest area. The solution was surpris

Re: [Qgis-user] draw polygon

2023-07-25 Thread Richard McDonnell via QGIS-User
Hi Salvatore, You could try: 1. Selecting/Highlighting Polygon 1, which should also highlight the area you want to cut into area 4. 2. Using the Split Features tool, you can then create a cutline to clip it successfully, something like what’s shown below in green, should work. The

Re: [Qgis-user] Removal of overlap geometries within the same layer - merge to largest neighbor polygon

2023-07-25 Thread Wouter Impens via QGIS-User
Hi Andreas, You could do a ' self-intersect' of the polygon layer, calculate the area, select polygons under specific area (assuming they're small overlaps) and run the ' eliminate selected polygons' tool. The GRASS tool v.clean offers some solutions too. Greetings Wouter Op di 25 jul 2023 om 1

Re: [Qgis-user] Removal of overlap geometries within the same layer - merge to largest neighbor polygon

2023-07-25 Thread Nyall Dawson via QGIS-User
On Tue, 25 July 2023, 8:02 pm Andreas Neumann via QGIS-User, < qgis-user@lists.osgeo.org> wrote: > Hi, > > A friend of mine has a dirty input data set with lots of overlapping > geometries (within the same layer) and asked me if there is a tool within > QGIS to automatically remove the overlaps an

Re: [Qgis-user] Removal of overlap geometries within the same layer - merge to largest neighbor polygon

2023-07-25 Thread Bernhard Ströbl via QGIS-User
Hi Andreas, the Algorithm "Eliminate selected polygons" was originally created to address these questions. I usually imported the data into GRASS ran a clean there and reexported the results into a non topolgical dataset. Thus overlapping areas and gaps (only if closed) are identified and can b

Re: [Qgis-user] draw polygon

2023-07-25 Thread Prisma via QGIS-User
Hello Richard, it works! Thank you! Il 25/07/2023 10:36, Richard McDonnell ha scritto: Hi Salvatore, You could try: 1.Selecting/Highlighting Polygon 1, which should also highlight the area you want to cut into area 4. 2.Using the Split Features tool, you can then create a cutline to clip

[Qgis-user] Clipping ecw to mask not working

2023-07-25 Thread Michael Dufty via QGIS-User
I'm having issues trying to clip ecw images to a mask layer. Using raster-extraction-clip raster to mask layer. Default parameters. The tool runs extremely quickly (successfullyin 0.12 seconds), but produces a raster entirely black (0,0,0 for all pixels). With the correct extent of the mask laye

Re: [Qgis-user] Problem saving project to geopkg

2023-07-25 Thread Michael Dufty via QGIS-User
The error message includes MedicalDebt.mldata as a project name. I believe this is the file the memorylayer saver plugin creates to save the temporary layers to. Have you tried it with that plugin disabled? I'm really dependent on the memory layer saver plugin, and have abandoned investigati