petercorke / gcdist

Great circle distance calculator

$ gcdist start end

will display the great-circle distance in kilometres between the two places. For example:

$ python gcdist.py "albany, west australia" "hobart"
Albany, City Of Albany, Western Australia, Australia: lat=-35.0247822, lon=117.883608
Hobart, City of Hobart, Tasmania, 7000, Australia: lat=-42.8825088, lon=147.3281233
2675.6 km

Place geolocation is done using OpenStreetMap's Nominatum service. The display name of the looked up place is displayed as a check that the name is not aliased.

Uses a spherical world model so probably good to 1% accuracy.