Error Labelling Features Using Basic Python

BenVan_Kesteren1

Hi,

I am using the below code to label contours of a small area. Due to laziness and simplicity, this polyline featureclass has both the contours AND pipes together, but they are easy to identify, as all pipes have a description in the notes field, and they have NULL in the elevation field, and visa versa.

Due to these fields being this way, I am hoping to setup a simple python script to label the contours with ELEVATION and pipes with NOTES attribute.

I have my code working 99%, but as the contours are so close together I want to only show every 2nd line, so they are all contours with elevation / 0.5 with no remainder.

EG it would only return these: 150.00  150.25  150.50  150.75  151.00 151.25......

This code is giving me an error:

def FindLabel ( [ELEVATION], [NOTES] ):
  el = [ELEVATION]
  nt = [NOTES]
  if el > 0:
    if (el%0.5)==0:
      return el # returns the elevation as it contains a value
  else:
    return nt # returns [NOTES] as label

Error:

I can remove the line 'if (el%0.5)==0:' and it works fine (just a bit messy). So i know this line contains the problem.

Can anyone tell me where I have gone wrong please?

Thanks

OwenEarley

Cast your elevation value to a float and it should work:

def FindLabel ( [ELEVATION] , [NOTES] ):
  el = [ELEVATION]
  nt = [NOTES]
  if el > 0:  
    if (float(el)%0.5)==0: 
      return el
  else: 
    return nt