Each pair in the longitude and latitude vectors is considered in turn. For long vectors, this may be slow.

geodGc(longitude, latitude, dmax)

## Arguments

longitude vector of longitudes, in degrees east vector of latitudes, in degrees north maximum angular separation to tolerate between sub-segments, in degrees.

## Value

Data frame of longitude and latitude.

## References

1. http://williams.best.vwh.net/avform.htm#Intermediate (link worked for years but failed 2017-01-16).

## Great circle from New York to Paris (Lindberg's flight) l <- geodGc(c(-73.94,2.35), c(40.67,48.86), 1) mapLines(l$longitude, l$latitude, col='red', lwd=2)