Grass and postgis support topology, you can use qgis a front-end for them. On Saturday, 7 March 2020, Stefan Keller <[email protected]> wrote:
> Hi, > > This is about processing either an area mesh (tesselation) layer. Area > meshes are topological structures and issue is that most spatial data > formats - other than TopoJSON and E00 - are non-topological. > > This in means, that a data reader has to infer the topology from > geometry (which requires exponential computing time), and even worse, > that potentially there are topological errors (like gaps, > overlaps/slivers). The built-in "Topology Checker Plugin" of QGIS [1] > does the validation preprocessing step. > > Are there any ideas to store topology in a polygon vector layer (e.g. > as array of features IDs to reference polygon neighbors), so a reader > (a PyQGIS function/extension) doesn't have to rebuild the topology > every time? > > :Stefan > > [1] https://docs.qgis.org/3.4/en/docs/user_manual/plugins/core_ > plugins/plugins_topology_checker.html > _______________________________________________ > QGIS-Developer mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer -- Luigi Pirelli ************************************************************************************************** * LinkedIn: https://www.linkedin.com/in/luigipirelli * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli * GitHub: https://github.com/luipir * Book: Mastering QGIS3 - 3rd Edition <https://www.packtpub.com/eu/application-development/mastering-geospatial-development-qgis-3x-third-edition> * Hire a team: http://www.qcooperative.net **************************************************************************************************
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