Hi, Have you tried fixing the geometry? Go to vector/Geometry tools/Check Validity. Try both QGIS and GEOS methods. Topology Checker Plugin (that need to be installed under Plugins) also works well.
Nicolas Cadieux https://gitlab.com/njacadieux > Le 8 janv. 2021 à 09:31, Wanda Norman <[email protected]> a écrit : > > > I am getting the same error in the training module for lesson 6.2.9. I have > done the lesson twice thinking I had missed a step - but get to the same > point of extracting the buildings and get the error message. > > I am using QGIS 3.1 with Windows 10 on my HP laptop. > > Thanks! > Wanda Norman > > >> On Thu, Jan 7, 2021 at 12:23 PM Inna Nogeste <[email protected]> wrote: >> I’m working through the training manual and completed all the preceding >> modules and their output files. >> >> When I get to Module 8.2.1 >> >> https://docs.qgis.org/3.16/en/docs/training_manual/complete_analysis/analysis_combination.html#moderate-ty >> >> to intersect my previous output files I get an error message when I run the >> Intersection tool that a feature in my Overlay layer ’has invalid geometry. >> Please fix the geometry or change the Processing setting to the “Ignore >> invalid input features” option.’ >> >> >> >> The overlay layer is a polygonized vector layer createdin a previous modeul >> in the training manual from a raster layer. >> >> The invalid geometry in the polygonized layer represents 1 individual cell >> in the original raster layer. Changing the Processing setting to ”Skip >> (Ignore) Features with Invalid Geometries” doesn’t help and outputs an empty >> layer. >> >> >> >> Has anyone else had problems with this module and the layer files created in >> previous modules? >> >> I’ve noted that the original SRTM_41_19.TIF exercise data is in EPSG 32733 >> and not EPSG 32734 as per the other exercise (vector) data and this causes >> issues when you get to Module 8. >> >> >> >> I’m currently documenting discrepancies that I’m finding in the training >> manual and am assuming that I can eventually add them to >> https://github.com/qgis/QGIS-Documentation/issues?q=is%3Aissue+is%3Aopen+label%3AEasy >> >> >> >> Regards, >> >> >> >> Inna Nogeste >> >> >> >> Skickades från E-post för Windows 10 >> >> >> >> _______________________________________________ >> 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-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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