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ddbdcf8ab1
Adds a new option in project properties to set the units used for distance measurements. This setting defaults to the units set in QGIS options, but can then be overridden for specific projects. The setting is respected for length and perimeter calculations in: - Attribute table field update bar - Field calculator calculations - Identify tool derived length and perimeter values - Default unit shown in measure dialog Also adds unit tests to ensure that length and perimeter calculated by attribute table update bar, field calculator and identify tool are consistent wrt ellipsoidal calculations and distance units. (refs #13209, #12939, #2402, #4857, #4252)