Manual Reference Pages - GIS::DISTANCE::FORMULA::POLAR (3)
GIS::Distance::Formula::Polar - Polar coordinate flat-earth distance calculations. (BROKEN)
Supposedly this is a formula to better calculate distances at the
Normally this module is not used directly. Instead GIS::Distance
is used which in turn interfaces with the various formula classes.
While implimented, this formula has not been tested much. If you use it
PLEASE share your results with the author. Ive 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.
a = pi/2 - lat1
b = pi/2 - lat2
c = sqrt( a^2 + b^2 - 2 * a * b * cos(lon2 - lon1) )
d = R * c
This method is called by GIS::Distances distance() method.
Aran Clary Deltac <firstname.lastname@example.org>
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) ||2015-06-11 |
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