NAME

Geo::What3Words - turn WGS84 coordinates into three word addresses and vice-versa using what3words.com HTTPS API

VERSION

version 3.0.3

SYNOPSIS

my $w3w = Geo::What3Words->new();

$w3w->pos2words('51.484463,-0.195405');
# returns 'three.example.words'

$w3w->pos2words('51.484463,-0.195405', 'ru');
# returns 'три.пример.слова'

$w3w->words2pos('three.example.words');
# returns '51.484463,-0.195405' (latitude,longitude)

DESCRIPTION

what3words (http://what3words.com/) divides the world into 57 trillion squares of 3 metres x 3 metres. Each square has been given a 3 word address comprised of 3 words from the dictionary.

This module calls API version 3 (https://docs.what3words.com/public-api/) to convert coordinates into 3 word addresses (forward) and 3 words into coordinates (reverse).

Versions 1 and 2 are deprecated and are no longer supported.

You need to sign up at http://what3words.com/login and then register for an API key at https://developer.what3words.com

METHODS

new

Creates a new instance. The api key is required.

my $w3w = Geo::What3Words->new( key => 'your-api-key' );
my $w3w = Geo::What3Words->new( key => 'your-api-key', language => 'ru' );

For debugging you can either set logging or provide a callback.

my $w3w = Geo::What3Words->new( key => 'your-api-key', logging => 1 );
# will print debugging output to STDOUT

my $callback = sub { my $msg = shift; $my_log4perl_logger->info($msg) };
my $w3w = Geo::What3Words->new( key => 'your-api-key', logging => $callback );
# will log with log4perl.

ping

Check if the remote server is available. This is helpful for debugging or testing, but too slow to run for every conversion.

$w3w->ping();

words2pos

Tiny wrapper around words_to_position.

$w3w->words2pos('three.example.words');
# returns '51.484463,-0.195405' (latitude,longitude)

$w3w->words2pos('does.not.exist');
# returns undef

pos2words

Tiny wrapper around position_to_words.

$w3w->pos2words('51.484463,-0.195405'); # latitude,longitude
# returns 'three.example.words'

$w3w->pos2words('51.484463,-0.195405', 'ru');
# returns 'три.пример.слова'

$w3w->pos2words('invalid,coords');
# returns undef

valid_words_format

Returns 1 if the string looks like three words, 0 otherwise. Does not call the remote API.

$w3w->valid_words_format('one.two.three');
# returns 1

words_to_position

Returns a more verbose response than words2pos.

$w3w->words_to_position('prom.cape.pump');
# {
#        'coordinates' => {
#                           'lat' => '51.484463',
#                           'lng' => '-0.195405'
#                         },
#        'country' => 'GB',
#        'language' => 'en',
#        'map' => 'https://w3w.co/prom.cape.pump',
#        'nearestPlace' => 'Kensington, London',
#        'square' => {
#                      'northeast' => {
#                                       'lat' => '51.484476',
#                                       'lng' => '-0.195383'
#                                     },
#                      'southwest' => {
#                                       'lat' => '51.484449',
#                                       'lng' => '-0.195426'
#                                     }
#                    },
#        'words' => 'prom.cape.pump'
#      };

position_to_words

Returns a more verbose response than pos2words.

$w3w->position_to_words('51.484463,-0.195405')

# {
#        'coordinates' => {
#                           'lat' => '51.484463',
#                           'lng' => '-0.195405'
#                         },
#        'country' => 'GB',
#        'language' => 'en',
#        'map' => 'https://w3w.co/prom.cape.pump',
#        'nearestPlace' => 'Kensington, London',
#        'square' => {
#                      'northeast' => {
#                                       'lat' => '51.484476',
#                                       'lng' => '-0.195383'
#                                     },
#                      'southwest' => {
#                                       'lat' => '51.484449',
#                                       'lng' => '-0.195426'
#                                     }
#                    },
#        'words' => 'prom.cape.pump'
#      };

get_languages

Retuns a list of language codes and names.

$w3w->get_languages();
# {
#     'languages' => [
#                      {
#                        'name' => 'German',
#                        'nativeName' => 'Deutsch',
#                        'code' => 'de'
#                      },
#                      {
#                        'name' => 'English',
#                        'nativeName' => 'English',
#                        'code' => 'en'
#                      },
#                      {
#                        'name' => "Spanish",
#                        'nativeName' => "Español",
#                        'code' => 'es'
#                      },
# ...

INSTALLATION

The test suite will use pre-recorded API responses. If you suspect something changed in the API you can force the test suite to use live requests with your API key

PERLLIB=./lib W3W_RECORD_REQUESTS=1 W3W_API_KEY=<your key> perl t/base.t

AUTHOR

mtmail <mtmail-cpan@gmx.net>

COPYRIGHT AND LICENSE

This software is copyright (c) 2021 by OpenCage GmbH.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.

cpanm Geo::What3Words

perl -MCPAN -e shell
install Geo::What3Words