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Manual Reference Pages  -  GIS::DISTANCE::FAST (3)

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NAME

GIS::Distance::Fast - C implementation of GIS::Distance formulas.

CONTENTS

DESCRIPTION

This distribution re-implements some, but not all, of the formulas that come with GIS::Distance in the C programming language. C code is generally much faster than the perl equivilent.

In most of my testing I’ve found that the C version of the formulas outperform the Perl equivelent by at least 2x.

This module need not be used directly. GIS::Distance will automatically use the ::Fast formulas when they are available.

FORMULAS

GIS::Distance::Formula::Cosine::Fast

GIS::Distance::Formula::Haversine::Fast

GIS::Distance::Formula::Vincenty::Fast

BUGS

The GIS::Distance::Formula::Vincenty::Fast produces slightly different results than GIS::Distance::Formula::Vincenty. Read the POD for GIS::Distance::Formula::Vincenty::Fast for details.

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.
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perl v5.20.3 GIS::DISTANCE::FAST (3) 2012-03-24

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