area calculation error after CRS changes #19197
Labels
Bug
Either a bug report, or a bug fix. Let's hope for the latter!
Projections/Transformations
Related to coordinate reference systems or coordinate transformation
Author Name: Gavin Fleming (@gubuntu)
Original Redmine Issue: 10821
Affected QGIS version: 2.4.0
Redmine category:projection_support
Submitted on behalf of Therese Forsyth
Testing QGIS 2.4 with area calculations. File used attached.
I can confirm the same error in 2.5 Master. The layer's geometry is in "South African CRS : HBK_NO_27" CRS. I know that Therese is mistaken in some of her experiments thinking that projecting on the fly might affect area calculations since the calculations occur on the native geometry, not in the projected space (right?). Which means that the area calculation should be the same no matter what project CRS is set and also should be correct every time, which is not the case.
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