After I merge/dissolve polygons together, the area I calculated using the field calculator seems to decrease, in comparison to the calculation of each individual area and then summing it up. Can somebody tell me why this is happening? I am using the same projection (Europe equal distant EPSG: 102031) and the same method $area in the field calculator.
closed as off-topic by Vince, Ian Turton♦ Aug 13 at 16:11
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This problem cannot or can no longer be reproduced. Changes to the system or to the asker's circumstances may have rendered the question obsolete, or the question does not include a procedure to enable potential answerers to reproduce the same symptoms. Such questions are off-topic as they are unlikely to help future readers, but editing them to include more details can lead to re-opening." – Vince, Ian Turton