Hello,

I need to update the distance field using the Pole_ID using Python script. From Pole_ID 0 to Pole_ID 1 and Pole_ID 1 to Pole_ID 2 and etc.

Kindly suggest me anyone.

Hello,

I need to update the distance field using the Pole_ID using Python script. From Pole_ID 0 to Pole_ID 1 and Pole_ID 1 to Pole_ID 2 and etc.

Kindly suggest me anyone.

- 2 people found this helpful
**Cumulative Distance**If you want distance from the first point then use cumulative distance:

repeat the steps from above

**Pre-logic Script Code:**`""" input shape field: returns cumulative distance between points`

dist_cumu(!Shape!) #enter into the expression box"""

x0 = 0.0; y0 = 0.0; distance = 0.0

def dist_cumu(shape):

global x0; global y0; global distance

x = shape.firstpoint.X; y = shape.firstpoint.Y

if x0 == 0.0 and y0 == 0.0:

x0 = x; y0 = y

distance += math.sqrt((x - x0)**2 + (y - y0)**2)

x0 = x; y0 = y

return distance**calculation field =**`dist_cumu(!Shape!)`

Same caveats as above.

NOTE:

if you have 3 or more points selected, then it will calculate the values with just the selection.

Inter-point distanceDo the following:

Pre-logic Script Code:calculation field =where calculation field is your active field, it will show its name.

Make sure you have projected data and a double field or nothing will make sense.