GIS::Distance::Formula::Polar - Polar coordinate flat-earth distance calculations. (BROKEN)
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.
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.
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::Distance's distance() method.
GIS::Distanc
Aran Clary Deltac <bluefeet@cpan.org>
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install GIS::Distance, copy and paste the appropriate command in to your terminal.
cpanm
cpanm GIS::Distance
CPAN shell
perl -MCPAN -e shell install GIS::Distance
For more information on module installation, please visit the detailed CPAN module installation guide.