On Sun, 1 Sep 2019 at 03:05, DelazJ <[email protected]> wrote: > > Hi, > I don't know whether it's an issue to file or a design so i'm asking > beforehand. > > If you use select by location algorithm with the same layer as source and > comparing, and select a predicate like "within" for example, it returns all > the features since it considers a feature to be within itself. Logical but > this means that you can not rely on this tool to check whether there are > features in the same layer that are within others. > This applies to most of the other geometric predicates, making them useless > in this context. > > Question: Should the algorithm not skip same features comparison when we use > the same data source? Or are there other tools for features comparison if the > layers are the same?
Ha - good question, and not something I've seen discussed before! Could I request you to do a quick audit of other applications (ArcGIS, GRASS, etc) and see what behavior they have adopted here? Nyall > > Regards, > Harrissou > > _______________________________________________ > 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 _______________________________________________ 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
