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# NAME
Geo::Constants - Package for standard Geo:: constants.
# SYNOPSIS
use Geo::Constants qw{PI DEG RAD}; #import into namespace
print "PI: ", PI(), "\n";
print "d/r: ", DEG(), "\n";
print "r/d: ", RAD(), "\n";
use Geo::Constants; #Perl OO
my $obj = Geo::Constants->new();
print "PI: ", $obj->PI, "\n";
print "d/r: ", $obj->DEG, "\n";
print "r/d: ", $obj->RAD, "\n";
# DESCRIPTION
# CONSTRUCTOR
## new
The new() constructor
my $obj = Geo::Constants->new();
## initialize
# FUNCTIONS
## PI
my $pi = $obj->PI;
use Geo::Constants qw{PI};
my $pi = PI();
## DEG
my $degrees_per_radian = $obj->DEG;
use Geo::Constants qw{DEG};
my $degrees_per_radian = DEG();
UOM: degrees/radian
## RAD
my $radians_per_degree = $obj->RAD;
use Geo::Constants qw{DEG};
my $radians_per_degree = RAD();
UOM: radians/degree
## KNOTS
1 nautical mile per hour = (1852/3600) m/s - United States Department of Commerce, National Institute of Standards and Technology, NIST Special Publication 330, 2001 Edition
Returns 1852/3600 m/s/knot
UOM: meters/second per knot
# AUTHOR
Michael R. Davis
# LICENSE
Copyright (c) 2006-2025 Michael R. Davis
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
# SEE ALSO
[Geo::Functions](https://metacpan.org/pod/Geo::Functions), [Geo::Ellipsoids](https://metacpan.org/pod/Geo::Ellipsoids), [Astro::Constants](https://metacpan.org/pod/Astro::Constants)
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