Geo::Constants(3p)

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