Is the any way to group multiple points by attribute to make pie charts that shows types by locations?
I have a layer with groups of points with two fields (group and type). Every group of points is exactly in the same location.
What I want to do is to show a pie char in every location showing as many parts as types is in the group.
I've been trying out with
count as @Kazuhito suggested in the expression constructor of the diagrams creator of the layer, but the charts are blank.