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Calculate Field tool

KateEkhator74

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.

CalculateField.PNG

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Accepted answers

KateEkhator74

This worked, thanks.

danretired

comma could be localization

All comments

KateEkhator74

This worked, thanks.

KateEkhator74

Thanks, removed comma and it worked.

KateEkhator74

The percentage field had zeros (0) after I added the field (see attached), made sure data type was double. I can't edit the column for null when adding field. It opens greyed out.

PercentageField.PNG

danretired

comma could be localization

JayantaPoddar

Could you delete the comma in the denominator (15675.2), and try again?

danretired

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.

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