

 
Manual Reference Pages  GIS::DISTANCE::FORMULA::POLAR (3)
.ds Aq ’
NAME
GIS::Distance::Formula::Polar  Polar coordinate flatearth distance calculations. (BROKEN)
CONTENTS
DESCRIPTION
Supposedly this is a formula to better calculate distances at the
poles.
Normally this module is not used directly. Instead GIS::Distance
is used which in turn interfaces with the various formula classes.
BROKEN
While implimented, this formula has not been tested much. If you use it
PLEASE share your results with the author. I’ve tested the results of this
formula versus Vincenty and it appears that this formula is broken (or
the implementation is) as you can see in 02_polar.t.
FORMULA
a = pi/2  lat1
b = pi/2  lat2
c = sqrt( a^2 + b^2  2 * a * b * cos(lon2  lon1) )
d = R * c
METHODS
distance
This method is called by GIS::Distance’s distance() method.
SEE ALSO
GIS::Distanc
AUTHOR
Aran Clary Deltac <bluefeet@cpan.org>
LICENSE
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
perl v5.20.3  GIS::DISTANCE::FORMULA::POLAR (3)  20150611 
Visit the GSP FreeBSD Man Page Interface. Output converted with manServer 1.07. 