Saturday 19 January 2019

polygon - Calculating Statistics Based on Expression in QGIS?


Is it possible to calculate the sum of polygon areas based on whether or not it has a value in another column?


For example:



In column 2 I have the area of polygons. I want to calculate the area of all polygons that contain 'AG' in column 1 or all polygons that are IN column 1. But calculate them separately so I can get the total area of each type in column 1.




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