Michael R. Davis > Geo-Functions > Geo::Functions

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Module Version: 0.07   Source  

NAME ^

Geo::Functions - Package for standard Geo:: functions.

SYNOPSIS ^

  use Geo::Functions qw{deg_rad deg_dms rad_deg}; #import into namespace
  print "Degrees: ", deg_rad(3.14/4), "\n";

  use Geo::Functions;
  my $obj = Geo::Functions->new;
  print "Degrees: ", $obj->deg_rad(3.14/2), "\n";

DESCRIPTION ^

CONVENTIONS ^

Function naming convention is "format of the return" underscore "format of the parameters." For example, you can read the deg_rad function as "degrees given radians" or "degrees from radians".

CONSTRUCTOR ^

new

The new() constructor

  my $obj = Geo::Functions->new();

METHODS ^

deg_dms

Degrees given degrees minutes seconds.

  my $deg=deg_dms(39, 29, 17.134);

  my $deg=deg_dms(39, 29, 17.134, 'N');

deg_rad

Degrees given radians.

  my $deg=deg_rad(3.14);

rad_deg

Radians given degrees.

  my $rad=rad_deg(90);

rad_dms

Radians given degrees minutes seconds.

  my $rad=rad_dms(45 30 20.0);

round

Round to the nearest integer. This formula rounds toward +/- infinity.

  my $int=round(42.2);

dms_deg

Degrees minutes seconds given degrees.

  my ($d, $m, $s, $sign)=dms_deg($degrees, qw{N S});
  my ($d, $m, $s, $sign)=dms_deg($degrees, qw{E W});

dm_deg

Degrees minutes given degrees.

  my ($d, $m, $sign)=dm_deg($degrees, qw{N S});
  my ($d, $m, $sign)=dm_deg($degrees, qw{E W});

mps_knots

meters per second given knots

  my $mps=mps_knots(50.0);

knots_mps

knots given meters per second

  my $knots=knots_mps(25.0);

TODO ^

BUGS ^

Please send to the geo-perl email list.

LIMITS ^

AUTHOR ^

Michael R. Davis qw/perl michaelrdavis com/

LICENSE ^

Copyright (c) 2006 Michael R. Davis (mrdvt92)

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO ^

Geo::Constants Geo::Ellipsoids

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