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ELL_GEO_SIDE

## Name

ELL_GEO_SIDE

## Purpose

Find which side of a geodesic a given point located on.

## Calling Sequence

side = ell_geo_side( p1, p2, pt)

## Inputs

p1 = Start point of the geodesic {lon:lon1, lat:lat1}. in
p2 = End point of the geodesic {lon:lon2, lat:lat2}. in
pt = Point to check {lon:lont, lat:latt}. in
If lont and latt are arrays side will be an array also.
side = Side code (pt as seen from p1):
-1 means pt is left of p2.
0 means pt is aligned with p2.
+1 means pt is right of p2.

## Modification History

R. Sterner, 2006 Sep 25
R. Sterner, 2009 Jan 15 --- Allowed arrays in pt.
Copyright (C) 2006, Johns Hopkins University/Applied Physics Laboratory
This software may be used, copied, or redistributed as long as it is not
sold and this copyright notice is reproduced on each copy made. This
routine is provided as is without any express or implied warranties
whatsoever. Other limitations apply as described in the file disclaimer.txt.

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