Field calculator

FOUADHAMDAN_SAAD

Hi community....

I need your help to create python script  to calculate the value of  the field that called "code" type short integer according to following condition:

def reclass(industrial_area):

if (industrial_area > two_third_neigh_area):

return 13

elif (industrial_area > one_third_neigh_area and industrial_area< two_third_neigh_area):

return 16

elif (industrial_area < one_third_neigh_area):

return unclassified 

 I tried to apply the above if statement but I got this message:

 

JayantaPoddar

In the reclass() function you have defined a single variable "industrial_area", whereas you have called three variables in the code "industrial_area", "one_third_neigh_area", "two_third_neigh_area".

You should add three variables in the function, and also define the appropriate fields in the expression.

 

Moreover, I don't understand "unclassified"? If this is a value, it won't fit in a Short integer type. You could replace it with values like 0 or 99.

 

e.g.: Assuming the layer has three numeric fields viz., "industrial_area", "one_third_neigh_area", "two_third_neigh_area"

Expression:

reclass(!industrial_area!, !one_third_neigh_area!, !two_third_neigh_area!)

Code Block:

def reclass(industrial_area, one_third_neigh_area, two_third_neigh_area):
    if (industrial_area > two_third_neigh_area):
        return 13
    elif ((industrial_area > one_third_neigh_area) and (industrial_area< two_third_neigh_area)):
        return 16
    elif (industrial_area < one_third_neigh_area):
        return 99