I have a shapefile in QGIS that I have created by importing a CSV of points, using Points2One to convert to a shapefile and then importing the shape. I am now trying to calculate the are of the shape but when trying to use the field calculator I can't figure out how to get the area? Can anyone help?


  • 2
    What do you mean? You already have the answer in your screenshot. Press OK. – underdark Jun 17 '13 at 17:00
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    The only thing I might add to Underdark's comment is that you might want to adjust your precision unless you're happy to round to the nearest meter. – MappaGnosis Jun 17 '13 at 17:53
  • ... and the areas are less than square metres. – AndreJ Jun 18 '13 at 5:39

The problem was that I was trying to calculate the area of a set of points rather than a polygon which it seems isn't possible. So I converted the points to a polygon using the Points2One plugin. I could then calculate the area using the field calculator :)

Area of polygon

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