Field Calculator, Conditional

Question

I am trying to assign a value from one field of my attribute table to a new field based on the 3D field...

The code block I am thinking about is as follows:

def conditional (!FarmCateg!):
   if (FarmCateg=='4'):
       return 
        '''(and here I want to return values from "Percent Area" Field (float)):'''
   elif( ): return "0"

Expression: conditional(!FarmCateg!)

Answer 1

Try something like this where I have assumed that the third field you are wanting to update is of type float or double ...

Code Block:

def conditional (FarmCateg,PercentArea):
   if FarmCateg == '4':
       return PercentArea
   else:
       return 0.0

Expression:

conditional(!FarmCateg!,!PercentArea!)

Answer 2

def conditional (FarmCateg,PercentArea): if FarmCateg == 4: return PercentArea else: return 0.0