difflon {GEOmap}

Difference between Longitudes

Description

Difference between Longitudes

Usage

difflon(LON1, LON2)

Arguments

LON1

Longitude in degrees

LON2

Longitude in degrees

Details

takes into account crossing the zero longitude

Value

deg

degrees difference

sn

direction of rotation

Author(s)

Jonathan M. Lees<jonathan.lees.edu>

Examples

difflon( 34 , 67)

###  here we cross the zero line
difflon( 344 , 67)