I want to calculate areas of different polygons in QGIS in tabular format.
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2Welcome :-) This question is a subset of an already answered question: gis.stackexchange.com/questions/30006/… The first rule of posting a question is doing a proper search. I believe your question will be marked as a duplicate and eventually removed. Do not take it personally :-) Building a good QA base requires this process.– ragnvaldMar 21, 2015 at 8:06
1 Answer
For a single polygon you can use the Identify Features toolbutton. In the Identify Result dialog look under Derived for the area of the clicked polygon.
http://docs.qgis.org/2.0/en/docs/user_manual/introduction/general_tools.html
If you want to update or make a new column with the area use the Field Calculator and the function Geometry > area$. The dollar sign just tells you that the function takes no arguments from you.
The Identify Feature and Field Calculator buttons:
You can also access the Field Calculator within the Attribute window.