Hello
Am trying to calculate the percentage area of the land cover classes in my map and keep on getting this error message (see attached). I tried changing the setting when adding the new field (percentage) so that I can click on the allow null, but it is greyed out. I tried clicking on the error message and it tells me there is no solution at this time.
Please can anyone help?
Thanks.
Solved! Go to Solution.
This worked, thanks.
Do you have any records with null values in that field?
I would add a new field (eg double, Area2, make sure it isn't nullable)
Then try the expression again.
Could you delete the comma in the denominator (15675.2), and try again?
comma could be localization
Thanks, removed comma and it worked.
This worked, thanks.