[Qgis-user] rule based classification - attribute based on other layer

[Matteo Ghetta]

Hi all,
very simple question.
In the rule-based classification (vector) is it possible to use values of
another layer loaded in QGIS?

For example. Point vector and I want to display as red each feature that
has a value greater than a value stored in another point layer (or in a
table).
In the expression builder there are the fields of the active layer.

Is it possible to call the fields of other layers?

Thanks

Cheers

Matteo
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