My problem is when using the "measure Area" tool on the toolbar I get the correct value but when using the field calculator in the Layer Attributes the area is very different including -ve areas. Both the project and layer are using a UTM CRS. Using version 2.0.1

  • 1
    Could you add some more context? What software are you using? Maybe a link to a picture to demonstrate what you try to do could help as well. – Martin Oct 31 '13 at 14:38

Note that identify tool and field calculators use different methods to calculate areas:


Vector -> Geometry Tools -> Export/Add geometry columns

lets you choose if measurement of the new columns shall be in layer CRS, project CRS or ellipsodial (which the identify tool uses).

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.