How can we find the angle between two locations defined by latitude or longitude

Question

I do not want any code but want to get reference that how can we find the angle between two locations defined by Latitude or Longitude...

If you do have reference then Please help me to solve my problem...

Thanx in advance....

There is no angle between two points ;-) Can you please clarify what you exactly need. — Mario The Spoon, Jul 19 '11 at 09:41
possible duplicate of http://stackoverflow.com/questions/3932502/calcute-angle-between-two-latitude-longitude-points — Krishnabhadra, Jul 19 '11 at 09:43
Perhapse this helps: http://stackoverflow.com/questions/6189258/angle-between-two-known-android-geolocations — Mario The Spoon, Jul 19 '11 at 09:44
@krishnabhadra i had see that link but not get any thing thats why had make question — Mehul Mistri, Jul 19 '11 at 09:44
you could have also meant compass heading or the like, give your express mentioning of lat/long... — Mario The Spoon, Jul 19 '11 at 09:45

score 7 · Accepted Answer · answered Jul 19 '11 at 09:45

The formula to calculate bearing is:

θ = atan2( sin(Δlong).cos(lat2), cos(lat1).sin(lat2) − sin(lat1).cos(lat2).cos(Δlong) )

Bearing is a direction to move from one location to another location (starting from north and then clockwise). While angle in 2D starts from the east and then counter clockwise. So if an angle is what you need, later you'll need to add 90 degree to the result and then revert it (add minus).

Reference: http://www.movable-type.co.uk/scripts/latlong.html

score 1 · Answer 2 · answered Jul 19 '11 at 09:41

1

try the Atan method

Math.Atan2(x1-x2,y1-y2)

answered Jul 19 '11 at 09:41

dknaack

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x1 is the x coordinate of point 1, x2 is the x cordinate of point 2 and so on.. ok ? So in you case (geolocation) x1 is the longitude of the first location. – dknaack Jul 19 '11 at 09:44
means x1 is first Latitude and y1 is first longitude and so on like this? – Mehul Mistri Jul 19 '11 at 09:46

score 0 · Answer 3 · answered Jul 20 '11 at 08:05

Try this website, it does all the calculations for you. Whereas the formulas, those can be found on wiki or any other sites. I like this site cos it managed to help me settle a lot of problems. And even if this web tool was developed in San Francisco, even I am from Singapore. This will work.

Latitude and Longitude web tool

How can we find the angle between two locations defined by latitude or longitude

3 Answers3

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