When I run the field calculator to update area, the resulting areas are too large. This happens whether I use QGIS 2.18 or QGIS 3.4.
The default CRS is set to: ESPG:27700, OSGB 1936 / British National Grid. However, somehow, the CRS has changed to ESPG:4325, WGS 84. When I change it back, the polygons do not appear on screen. If I recalculate $area, the amounts are '0.0000'.
Area default set as hectare, layer is a vector layer and all polygons are single part.
Example: using measuring tool gives area of 1 polygon at 7.441, but field calculator $area = 12.1819.
Any suggestions?
No comments:
Post a Comment