[Qgis-developer] Ideas/proposal for Attribute Table

[Nyall Dawson]

>
>
> 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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