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Latitude Longitude Distance - 140byt.es

# Latitude Longitude Distance

This uses the Haversine formula to calculate the great-circle distance between two points.

## Usage

```distanceLatLng (
latitude1, longitude1 // first coordinates
latitude2, longitude2 // seconds coordinates
diameter // earth diameter (might be any unit)
)

// returns the distance in the specified unit
```

### Earth Diameter

* 2 * 6378.137 Kilometers
* 2 * 6378137 Meter
* 2 * 3963.190 Miles

Author
------

Created by Martin Kleppe ([@aemkei](http://twitter.com/aemkei)) at [Ubilabs](http://ubilabs.net/).

--------------------

See the [140byt.es](http://140byt.es) site for a showcase of entries (built itself using 140-byte entries!), and follow [@140bytes](http://twitter.com/140bytes) on Twitter.```
 function( a, b, // first coord c, d, // second coord e, // earth diameter (might be any unit) z, i // placeholder ){ with (Math) { // use "Math" in context z = PI / 360; // used to convert in radiants return e * atan2( sqrt( i = pow(sin((c-a)*z), 2) + cos(a*z*2) * cos(c*z*2) * pow(sin((d-b)*z), 2) ), sqrt(1-i) ); } }
 function(a,b,c,d,e,z,i){with(Math)return z=PI/360,e*atan2(sqrt(i=pow(sin((c-a)*z),2)+cos(a*z*2)*cos(c*z*2)*pow(sin((d-b)*z),2)),sqrt(1-i))}
 DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE Version 2, December 2004 Copyright (C) 2011 YOUR_NAME_HERE Everyone is permitted to copy and distribute verbatim or modified copies of this license document, and changing it is allowed as long as the name is changed. DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. You just DO WHAT THE FUCK YOU WANT TO.
 { "name": "distanceLatLng", "description": "Calculate distance between Latitude/Longitude points.", "keywords": [ "geo", "maps", "distance" ] }
 Distance between Latitude/Longitude points

Distance Hamburg-Tokyo

8986 km expected
km calculated
5584 miles expected
miles calculated

### subzey commented Aug 30, 2011

 Great job! Flawless stereometry packed into tweet. The only one suggestion, as the assignment has very low precedence we may re-use `z` variable instead of `i` `function(a,b,c,d,e,z){with(Math)return z=PI/360,e*atan2(sqrt(z=pow(sin((c-a)*z),2)+cos(a*z*2)*cos(c*z*2)*pow(sin((d-b)*z),2)),sqrt(1-z))}`
Owner

### aemkei commented Aug 30, 2011

 Thanks for that suggestion. It saved another 2 bytes!