I'm using the following expression that works correctly and labels a layer of points with the count function:

case when "GRUP" = 1 then 
aggregate('points','count', "VAUEX", "VAUEX" IN ('A'))

The 'points' layer has two fields "GRUP" and "VAUEX". This expression filters the records from the "GRUP"='1' field and "VAUEX"='A' and counts the total.

I am trying to use this same expression in the Layout Label object with the following syntax:

[%case when "GRUP"=1 then
aggregate('points','count', "VAUEX", "VAUEX" IN ('A'))

I can't get it to work. How can I correct this expression so that it works and shows the total value?

1 Answer 1


The problem is that "GRUP" = 1 is meaningless to the Label object in the Layout, there is no context of the layer for which to evaluate the expression.

However, you can use a compound filter by combining your two clauses. In the aggregate function you are declaring which layer to use so the filter can evaluate successfully.

    expression:= "VAUEX", 
    filter:= "VAUEX" in ('A') and "GRUP" = 1

The else null is also redundant, as this is done implicitly for features that don't match the filter.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.