> > > Adding to QgsExpression doesn't make much sense as QgsExpression is only based on a single feature. You would need layer on top of if with functions that can do aggregates. > > - Nathan >
I would love to see layer stats in QgsExpression. Then it'd be possible to generate expressions which could compare individual features to the entire layer - eg testing if a value is greater than the layer mean, etc... There's already a bunch of non-feature specific functions in QgsExpression and a lot of demand for even more. Nyall
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