Which of the following conditions is required by Union?
A) The input layer can be a line or polygon layer but the overlay layer must be a polygon layer.
B) None of these are correct.
C) The input layer must be a polygon layer but the overlay layer can be a line or polygon layer.
D) Both the input and overlay layers must be polygon layers.

Question

Quizplus · Accepted Answer

Union operation in GIS specifically requires both the input and overlay layers to be polygon layers to correctly execute and produce a new layer that represents the geometric union of the input layers.

Which of the Following Conditions Is Required by Union