vincenty.py

vincenty.py

Vincenty's direct and inverse formulas for computing accurate distances and bearings on an ellipsoid (earth).

def get_heading(coord1, coord2)

Calculates the heading of coord2 from coord1. Coord1 and 2 are both tuples containing the latitude and longitude of the points. Returns a float in degrees.

def inverse(coord1,coord2)

Vincenty's Inverse Formula to computer an accurate distance between two points. Coord1 and 2 are both tuples containing the latitude and longitude of the points. Returns a tuple of floats in meters and heading in degrees.

def direct(phi1, lembda1, alpha12, s)

Computes the latitude and longitude of a point at a give distance and heading.

• phi1
  • float, latitude of the start point, decimal degrees
• lembda1
  • float, longitude of the start point, decimal degrees
• alpha12
  • float, heading, decimal degrees
• s
  • float, Distance to endpoint, meters