Calculate polygon sides

AlejandroMata

Hi all !

I have a polygon shp, and i want to calculate for this shp how many sides has each polygon, as the below image. Is it possible ? im almost sure that it is possible.


Thanks in advanced.

Imagen.jpg

field_mapping_idea.png

DarrenWiens2

This counts vertices, minus 1, in the Field Calculator which should be the number of sides.

Parser:
Python

Expression:

MySub(!shape!)

Codeblock:

def MySub(feat):    
    partnum = 0

    # Count the number of points in the current multipart feature
    partcount = feat.partCount
    pntcount = 0

    # Enter while loop for each part in the feature (if a singlepart feature
    # this will occur only once)
    #
    while partnum < partcount:
        part = feat.getPart(partnum)
        pnt = part.next()

        # Enter while loop for each vertex
        #
        while pnt:
            pntcount += 1   
            pnt = part.next()
   
            # If pnt is null, either the part is finished or there is an 
            # interior ring
            #
            if not pnt: 
                pnt = part.next()
        partnum += 1
    pntcount = pntcount - 1
    return pntcount