fortan code- distance between two longitudes

[sudevdasmp]

Hi,

Can any body please give me a fortran code to calculate distance between two longitudes
from south to north pole.

Thanking you,
Sudev Das

[prajeeshag]

hi,
I don't know about a fortran code for that, but there is an matlab fuction "ll2xy" by which u can convert the earth coordinates into cartesian coordinates and simply u can use the distance formula between these coordinates.