arcgis-desktoparcmapfield-calculatorpython-parser
I am trying to use field calculator to populate a column based on the the number of characters in another column. I am using the Python Parser. I am not sure if the .count() function is appropriate in this case or if I am even using it right.
My pre-logic script is:
def reclass(f1):
if f1.count() >= 4:
return "Yes"
else:
return "No"
Label = reclass( !HUB! )
I think the problem lies with your statement:
def !gridcode! (value):
is incorrect, see http://resources.arcgis.com/en/help/main/10.1/index.html#//00170000004s000000
def something(value):
It's hard to read what you've got there but I think this is it:
Full expression:
def TextValue(FromCode):
if FromCode > 0 and FromCode < 50:
return "0 - 50 cm from the surface"
elif FromCode < 150:
return "101 - 150 cm"
elif FromCode < 200:
return "151 - 200 cm"
elif FromCode < 250:
return "201 - 250 cm"
elif FromCode < 1000:
return "251 - 1000 cm"
else:
return "N/A"
This will populate the text that is in the legend using the GRIDCODE as the numeric source.
Assuming the data type for DIST_EDGE is numeric, the function should be (note, no quotes):
def Reclass(dist):
if dist >= 5:
return dist
else:
return 0
However, if DIST_EDGE is a string data type, you must cast it to a number before making your comparison:
def Reclass(dist):
if int(dist) >= 5:
return dist
else:
return '0'
Best Answer
I would make two changes:
len()to count the characters. Make sure you are writing to a text field.