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, Geo::Ellipsoids, Astro::Constants