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https://github.com/opencagedata/perl-geo-what3words

Perl module to access the what3words.com HTTPS API
https://github.com/opencagedata/perl-geo-what3words

perl what3words

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Perl module to access the what3words.com HTTPS API

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# NAME

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

[![Build Tests](https://github.com/OpenCageData/perl-Geo-What3Words/actions/workflows/ci.yml/badge.svg)](https://github.com/OpenCageData/perl-Geo-What3Words/actions/workflows/ci.yml)[![CPAN](https://img.shields.io/cpan/v/Geo-What3Words.svg?style=flat-square)](https://metacpan.org/pod/Geo::What3Words)
![Mastodon Follow](https://img.shields.io/mastodon/follow/109287663468501769?domain=https%3A%2F%2Fen.osm.town%2F&style=social)

# 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= perl t/base.t

# AUTHOR

mtmail

# 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.