I ended up writing a blog post with step-by-step instructions on how to do this. You may find it useful https://spatialthoughts.com/2021/06/12/split-polygons-qgis/ [image: Logo] <https://spatialthoughts.com/> Ujaval Gandhi Spatial Thoughts mobile: +91-8095684687 email: [email protected] [image: LinkedIn icon] <https://www.linkedin.com/in/spatialthoughts/> [image: Twitter icon] <https://twitter.com/spatialthoughts>
On Thu, Jun 10, 2021 at 12:34 PM Ujaval Gandhi <[email protected]> wrote: > Hi Azzurra, > > QGIS Processing Algorithms have an 'Iterate' feature that can be used to > run an algorithm on all features of the layer. (see attached screenshot) I > built a QGIS Processing Model that splits a polygon into N parts. You can > load the model using 'Add Model to Toolbox' from the Processing Toolbox > menu and run the 'Split Polygon' algorithm with 'Iterator' mode to run it > 200 times - one for each of your polygons. You will get 200 new layers > which can be merged into 1 using the 'Merge Vector Layer' tool. I tested it > on the US States dataset and it works well. > > > [image: Logo] <https://spatialthoughts.com/> > Ujaval Gandhi > Spatial Thoughts > mobile: +91-8095684687 > email: [email protected] > [image: LinkedIn icon] <https://www.linkedin.com/in/spatialthoughts/> [image: > Twitter icon] <https://twitter.com/spatialthoughts> > > > > On Thu, Jun 10, 2021 at 5:01 AM Azzurra Lentini <[email protected]> > wrote: > >> Hi List, I ask you again the same question I asked you days ago. >> I have several polygons - around 200- (all different shapes and not >> regular geometry) and I need to split every single polygon into 3 parts >> of similar size. >> I have tried with *Split polygons* but it is working very well only with >> regular geometries (square, rectangle etc.) and so I can not use it in this >> case. >> I have tried also your suggestions (generate points, kclustering and >> voronoi polygons):https://gis.stackexchange.com/questions/321021/how-to- >> split-polygon-into-equal-area-polygons-in-qgis-3 and >> https://blog.cleverelephant.ca/2018/06/polygon-splitting.html >> but I am not able to do it to all 200 polygons at once.. I can do it only >> polygon by polygon.. >> >> do you have other suggestions? thanks AL >> >> On Wed, 19 May 2021 at 15:49, Azzurra Lentini <[email protected]> >> wrote: >> >>> Dear List, >>> please I would like to have any suggestion regarding this topic: I have >>> several polygons (all different shapes and not regular geometry) and I need >>> to split every single polygon into 3 parts of similar size. >>> I have tried with *Split polygons* but it is working very well only >>> with regular geometries (square, rectangle etc.) and so I can not use it in >>> this case. >>> >>> Do you have any suggestions? >>> >>> THANK YOU, AZZURRA >>> -- >>> Adjunct Professor University "Roma Tre" >>> Gis Applied for Environmental studies >>> Risk modelling & Hydrogeology >>> Consultant DFID-UK, United Nations, EU projects >>> AZZURRA LENTINI >>> ++++++++++++++++++++++++++ >>> Italy Mobile Tel.: **(39) 338 24 40 676 >>> ++++++++++++++++++++++++++ >>> SKYPE azzurrahydro >>> ++++++++++++++++++++++++++ >>> >>> *[email protected] <[email protected]>* >>> >>> *[email protected] <[email protected]> * >>> ++++++++++++++++++++++++++ >>> *Par respect pour l'environnement,* >>> >>> *n'imprimez ce mail qu'en cas d'absolue nécessité* >>> >>> >>> >>> >>> >>> >> >> -- >> Adjunct Professor University "Roma Tre" >> Gis Applied for Environmental studies >> Risk modelling & Hydrogeology >> Consultant DFID-UK, United Nations, EU projects >> AZZURRA LENTINI >> ++++++++++++++++++++++++++ >> Italy Mobile Tel.: **(39) 338 24 40 676 >> ++++++++++++++++++++++++++ >> SKYPE azzurrahydro >> ++++++++++++++++++++++++++ >> >> *[email protected] <[email protected]>* >> >> *[email protected] <[email protected]> * >> ++++++++++++++++++++++++++ >> *Par respect pour l'environnement,* >> >> *n'imprimez ce mail qu'en cas d'absolue nécessité* >> >> >> >> >> >> _______________________________________________ >> Qgis-user mailing list >> [email protected] >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >> >
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