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I'm trying to replace the text in a field to build a label expression. The field I'm using is called [Organizatio] and it holds the school's name. What I want is to tell ArcMap that when that name includes 'Central School District' - change it to "CSD."

This is what I have. ArcMap says it's valid but it does not make any changes.

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  • 2
    You need to define the function without the field name in code block, in the bottom block you can use the function as FindLabel(!Organizati!). Check documentation for more information – aldo_tapia May 9 '18 at 18:14
  • I'm not sure I understand what you're telling me. I'm doing this in the label expression window. Parameters have to be passed as shown. – Tory May 10 '18 at 18:52
4

As I mentioned in commentaries:

Use in pre-logic script code block:

def FindLabel(field):
  string = field
  newstring = string.replace('Central School District ', 'CSD ')
  return newstring

In field definition (test2 is the object field):

FindLabel( !test2! )

enter image description here

Result:

enter image description here

test1 and test2 had the same values initially

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