Calculate the rotation of a point on the Earth for a given Euler pole. The rotation assumes a shperical earth.
euler.rot(lat1, long1, rotdeg, lat2, long2)
Euler-pole latitude
Euler-pole longitude
Rotation about Euler-pole
Latitude of point to be converted
longitude of point to be converted
Rotated latitude and longitude of the provided point in decimal degrees.
Locations of the Euler pole and the point to be rotated must be given in decimal degrees.
~put references to the literature/web site here ~