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Points - Calculate Bearing/Direction from Point to Point in Attribute Table

ArmstKP

Has anybody done this in Python or Arcade?

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Accepted answers

Dale_Honeycutt

found on this stackoverflow thread:

import numpy
import math

def get_bearing(lat1, long1, lat2, long2):
    dLon = (long2 - long1)
    x = math.cos(math.radians(lat2)) * math.sin(math.radians(dLon))
    y = math.cos(math.radians(lat1)) * math.sin(math.radians(lat2)) - math.sin(math.radians(lat1)) * math.cos(math.radians(lat2)) * math.cos(math.radians(dLon))
    brng = numpy.arctan2(x,y)
    brng = numpy.degrees(brng)

    return brng

All comments

Dale_Honeycutt

That's good to hear b/c that was some scary math.

ArmstKP

@Dale_Honeycutt Thank you. This worked like a charm!

Dale_Honeycutt

found on this stackoverflow thread:

import numpy
import math

def get_bearing(lat1, long1, lat2, long2):
    dLon = (long2 - long1)
    x = math.cos(math.radians(lat2)) * math.sin(math.radians(dLon))
    y = math.cos(math.radians(lat1)) * math.sin(math.radians(lat2)) - math.sin(math.radians(lat1)) * math.cos(math.radians(lat2)) * math.cos(math.radians(dLon))
    brng = numpy.arctan2(x,y)
    brng = numpy.degrees(brng)

    return brng

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