Spherical computation

• Introduction
• Distance
  • Introduction
  • Spherical distance
  • Geodetic distance
  • Distance to a polyline
  • References
• Direction
  • Introduction
  • Point at distance and bearing
  • Triangulation
  • Bearing
  • Getting off-track
  • Rhumb lines
• Tracks
  • Introduction
  • Points on great circles
  • Maximum latitude on a great circle
  • Great circle intersections
• Area of polygons and sampling
  • Area and perimeter of polygons
  • Sampling longitude/latitude data