Hi Nyall,
> In QGIS 3.0 QgsVectorLayer::getValues will do what you want in a single call: > > https://qgis.org/api/classQgsVectorLayer.html#ac8cfb12633ed536da73f42ebff095f99 > > That works for either a field: > > layer.getValues('my_field') > > or an expression: > > layer.getValues('my_field * 2') whoooooa I was not aware of that, thanks! One further question, I tried it with the example field PH and the expression PH > 7. This the outputs: vl.getValues('PH') ([6.81, 6.78, 6.49, 6.72, 6.88, 7.68, 7.69, 7.38, 6.76, 6.84, 6.91, 6.74, 6.77, 6.73, 6.68, 6.94, 6.72], True) vl.getValues('PH > 7') ([0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0], True) with the expression it seems the output is TRUE/FALSE. Any clue to obtain also the attribute values? Thanks again Matteo _______________________________________________ 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
