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Computing in Geographic Information Systems
book

Computing in Geographic Information Systems

by Narayan Panigrahi
July 2014
Intermediate to advanced content levelIntermediate to advanced
303 pages
8h 34m
English
CRC Press
Content preview from Computing in Geographic Information Systems
214 Computing in Geographic Information Systems
cosines. The versed sine is 1 cos θ, and the half-versed-sine
1cos θ
2
= sin
2
(
θ
2
)
as used above. It was published by Roger Sinnott in Sky and Telescope mag-
azine in 1984 (“Virtues of the Haversine”), though known about for much
longer by navigators. A marginal performance improvement can be obtained
by factoring out the terms which get squared.
12.2.5 Vincenty’s Formula
Thaddeus Vincenty devised a formula for calculating geodesic distances be-
tween a pair of points on the surface of Earth given by latitude and longitude.
This uses an accurate ellipsoidal model of the Earth. While the mathematics
is a
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Publisher Resources

ISBN: 9781482223149