geographiclib >> Geography utilities from GeographicLib
Geodesics
  geoddistance
  geodreckon
  geodarea
Projections
  tranmerc_fwd
  tranmerc_inv
  polarst_fwd
  polarst_inv
  eqdazim_fwd
  eqdazim_inv
  cassini_fwd
  cassini_inv
  gnomonic_fwd
  gnomonic_inv
Grid systems
  utmups_fwd
  utmups_inv
  mgrs_fwd
  mgrs_inv
Geoid lookup
  geoid_height
  geoid_load
Geometric transformations
  geocent_fwd
  geocent_inv
  loccart_fwd
  loccart_inv
Great ellipses
  gedistance
  gereckon
Utility
  defaultellipsoid
  ecc2flat
  flat2ecc
  geographiclib_test
  geographiclib_signtest
Documentation
  geoddoc
  projdoc
  gedoc
