Hi > On 7 Aug 2019, at 09:53, Nyall Dawson <[email protected]> wrote: > > On Wed, 7 Aug 2019 at 16:23, Tim Sutton <[email protected] > <mailto:[email protected]>> wrote: >> >> Hi All >> >> I am trying to create a section in my report (not layout) which iterates >> over my plant types lookup table and applies a filter to my vegetation >> points layer based on the plant type ID. >> >> Ideally I should set my filter of my vegetation layer based on the atlas >> feature id like this: "plant_type_id" = attribute(@atlas_feature,id) >> >> Instead I tried to make a rule using the same above expression so that >> symbols are blank for non matching plant features. >> >> However in my report group, ‘Controlled by report’ is greyed out for my map >> and so when rendering the report the map comes out as a single blank copy >> instead of one per plant type. > > You shouldn't need that check box -- that's only used when you want > the map extent to center on the report feature. But, if I'm > interpreting your request correctly, you want a fixed map view but > iterating through different sets of visible features only? If this is > the case it should work fine regardless of the "controlled by report" > setting. >
Ok but is there a way to access the equivalent of @atlas_feature_id in my style rules when running the report so I can hide vegetation points that don’t match the plant name I am iterating over? >> >> I suspect this is because report wants to have geometries to zoom to for >> each record. > > Only if you want the map extent to vary page-by-page. For fixed extent > maps using geometry-less tables is fine. OK I am using a fixed extent. > >> Side note: QGIS layer filtering is a "poor relation” it is one of the few >> places in QGIS where a non standard expression editor is used. > > That's because it's always done on the provider side, so the filter > syntax varies by backend, and can't use all the nice QGIS-only stuff > like variables. Yup I am aware of the provider part but shouldn’t one still be able to interpolate QGIS expressions (or at least variables) into the filter expression? I am thinking the equivalent here of doing Select * from layer_foo where name=“@some_name” Which gets replaced with the actual name each time a read request is made. Thanks! Regards Tim > > See https://github.com/qgis/QGIS/issues/24932 > <https://github.com/qgis/QGIS/issues/24932> > > Nyall > > >> >> >> Thanks! >> >> Regards >> >> Tim >> — >> >> >> >> >> >> >> >> >> Tim Sutton >> >> Co-founder: Kartoza >> Ex Project chair: QGIS.org >> >> Visit http://kartoza.com to find out about open source: >> >> Desktop GIS programming services >> Geospatial web development >> GIS Training >> Consulting Services >> >> Skype: timlinux >> IRC: timlinux on #qgis at freenode.net >> >> I'd love to connect. Here's my calendar link to make finding time easy. >> >> _______________________________________________ >> 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 — Tim Sutton Co-founder: Kartoza Ex Project chair: QGIS.org Visit http://kartoza.com <http://kartoza.com/> to find out about open source: Desktop GIS programming services Geospatial web development GIS Training Consulting Services Skype: timlinux IRC: timlinux on #qgis at freenode.net I'd love to connect. Here's my calendar link <https://calendly.com/timlinux> to make finding time easy.
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