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Script for calculating distance between 2 local coordinate systems:

import math

part = GetRootPart()

#access local coordinate systems
temp1 = part.CoordinateSystems[0]
temp2 = part.CoordinateSystems[1]

#access origin of coordinate systems
coord1 = temp1.Frame.Origin
coord2 = temp2.Frame.Origin

#note – the values of origin are returned in Meter units

#calculate distance between 2 coordinate systems

x_dist = coord2[0]-coord1[0]
y_dist = coord2[1]-coord1[1]
z_dist = coord2[2]-coord1[2]

dist = math.sqrt((x_dist**2)+(y_dist**2)+(z_dist**2))

print dist

 

Script for calculating distance between any local coordinate system and world origin:

import math

part = GetRootPart()

#access local coordinate system
temp = part.CoordinateSystems[0]

#access origin of coordinate system
a = temp.Frame.Origin
print a

#note – the values of origin are returned in Meter units

#calculate distance from global origin
dist = math.sqrt((a[0]*a[0])+(a[1]*a[1])+(a[2]*a[2]))
print dist