Hi, Oliver Oliver Eichler wrote: > Yeah, that's what I need. I guess my pseudo code was misleading. Does > proj4 implement such an API? Or do I have to make my own C function of > Vincenty’s formula as described at http://bugzilla.remotesensing.org/show_bug.cgi?id=1378 Are you looking for this? -- Best regards, Sergey Spiridonov