I have information in a point layer with one Z-value per point. It is displayed in the screenshot as a label. I have made an polygon layer with a "min Z value" per polygon. The polygons are displayed in the screenshot in brown, green and orange(ish). I have stored the "min Z value in the database of the polygonlayer.
I want to check if there are Z-values in the pointlayer that are less than specified in the "min Z value" column of the polygon layer.
Example: the "min Z value" for the orange(ish) polygon is 7.00; I want to check if there are any values in the pointlayer within the perimeters of the orange polygon that are less then 7.00.