I have a .shp of points. This points are organized in groups with same ID (group 1, 2 ,3)
Each group has 10 points.
Each point has a Z column with Z values.
I want to select the point with the highest Z value for each group.
So just one point should be selected for each group.
I was trying "select by expression" but I don't know what expression to use.
Also, I need a way to automatize this. This process is just a small part of my project that needs to be repeated a bunch of times, so doing this manually all the time is impossible. A way to use do this with graphical modeler would be great.