GEO2MAG
Name
GEO2MAG()
Purpose
Convert from geographic to geomagnetic coordinates
Explanation
Converts from GEOGRAPHIC (latitude,longitude) to GEOMAGNETIC (latitude,
longitude). (Altitude remains the same)
Latitudes and longitudes are expressed in degrees.
Calling Sequence
mcoord=geo2mag(gcoord)
Input
gcoord = a 2-element array of geographic [latitude,longitude], or an
array [2,n] of n such coordinates.
Keyword Inputs
None
Output
a 2-element array of magnetic [latitude,longitude], or an array [2,n]
of n such coordinates
Common Blocks
None
Examples
geographic coordinates of magnetic south pole
IDL> mcoord=geo2mag([79.3,288.59])
IDL> print,mcoord
89.999992 -173.02325
Modification History
Written by Pascal Saint-Hilaire (Saint-Hilaire@astro.phys.ethz.ch),
May 2002