My CRS is
US national Atlas Equal Area | EPSG:2163
First, I right-clicked on my layer, opened the
Attribute Table, toggled editing mode, then opened the
Next, I checked the box for
Create a new field, put in "area_calc" for the
Output field name, then chose
$area as the value.
However, the problem I'm having is that the area calculation values don't really make sense (I think). For example, the value for area of Alabama on Wikipedia is 135,765 km^2, and the area_calc value is 13. All fields in this column are extremely low compared to the actual state area values.
My question is:
1) If the CRS units is in meters, why are the area values so low?
NOTE: When I use
Export/add Geometry Columns, the results are the same.