Coordinate Parser

Intelligent geographical coordinate parser in JavaScript

Flexible algorithm to parse strings containing various latitude/longitude formats.

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``js
Coordinates = require('coordinate-parser');

position = new Coordinates('40:7:22.8N 74:7:22.8W');

latitude = position.getLatitude(); // 40.123 ✓
longitude = position.getLongitude(); // -74.123 ✓
`

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- 40.123, -74.123
- 40.123° N 74.123° W
- 40° 7´ 22.8" N 74° 7´ 22.8" W
- 40° 7.38’ , -74° 7.38’
- N40°7’22.8, W74°7’22.8"
- 40°7’22.8"N, 74°7’22.8"W
- 40 7 22.8, -74 7 22.8
- 40.123 -74.123
- 40.123°,-74.123°
- 144442800, -266842800
- 40.123N74.123W
- 4007.38N7407.38W
- 40°7’22.8"N, 74°7’22.8"W
- 400722.8N740722.8W
- N 40 7.38 W 74 7.38
- 40:7:23N,74:7:23W
- 40:7:22.8N 74:7:22.8W
- 40°7’23"N 74°7’23"W
- 40°7’23" -74°7’23"
- 40d 7’ 23" N 74d 7’ 23" W
- 40.123N 74.123W
- 40° 7.38, -74° 7.38

... and others that follow a similar pattern.

Handles also the following "exotic" formats:

- 145505994.48, -268708007.88 (geographical milliseconds)
- 4025.0999N7438.4668W (DDMM.xxxx)
- 402505.994N743828.008W (DDMMSS.xxxx)

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Input that does not resemble valid coordinates will throw an error.

The parser will detect invalid formats such as 40.123N FOOBAR 74.123W (invalid characters), 40.123W 74.123N (latitude/longitude exchanged) and 40.12 12.34 74.12 (odd numbers).

Flexibility towards non-alphanumeric characters and whitespaces is maintained.

`js
isValidPosition = function(position) {
var error;
var isValid;
try {
isValid = true;
new Coordinates(position);
return isValid;
} catch (error) {
isValid = false;
return isValid;
}
};

isCoordinate = isValidPosition('40:7:22.8N 74:7:22.8W'); // true
isCoordinate = isValidPosition('40.123 FOOBAR! 74.123'); // false
``

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This software is licensed under the Apache 2 license:
http://www.apache.org/licenses/LICENSE-2.0

Copyright (C) 2016 WEPROG GmbH

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Originally developed for WEPROG who kindly gave permission to open-source this code.