I Have Latitude 28.6368897, Longitude 77.0694746 And I Want To Find Next Latitude & Longitude In 2 Kilometer.? In C#

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I have Latitude 28.6368897, Longitude 77.0694746 and i want to find next Latitude & Longitude in 2 kilometer.? in c#

I have code in Java script,

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<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&libraries=geometry"></script>
<script>
function Distance(){
//debugger;
var p1 = new google.maps.LatLng(28.6368897, 77.0694746);
var p2 = new google.maps.LatLng(28.6361000, 77.0691000);

alert(calcDistance(p1, p2));
}
//calculates distance between two points in km's
function calcDistance(p1, p2){
  return (google.maps.geometry.spherical.computeDistanceBetween(p1, p2) / 1000).toFixed(2);
}

can any one convert into c#

Posted 26-Jan-15 20:13pm

janmejay1

Updated 27-Jan-15 4:18am

TheRealSteveJudge

v4

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Comments

BillWoodruff 27-Jan-15 3:07am

"in two kilometers" could mean anywhere on the circumference of a circle whose radius was 2 kilometers ... unless you specify a direction.

janmejay1 27-Jan-15 4:07am

yes anywhere on the circumference of a circle whose radius was 2 kilometers

Tomas Takac 27-Jan-15 5:17am

In theory there is infinite number of such points do you realize that? Furthermore your code in javascript just calculates distance between two points. So what is the question: convert the javascript code to C# or a unrelated C# code to get you a (random?) point 2km from the original location?

V. 27-Jan-15 6:52am

if longitude,latitude are x and y you could calculate the radius with r = sqrt(power(long, 2) + power(lat, 2)). using the knowledge that r has to be 2 you can reverse calculate the longitude if you have the laitude or vice versa.

However a small note, the earth is not flat and this formula only gives a 2d solution. If you want to use the "real" distance (on the sphere) you'll need to deproject it, which is not a trivial task.

Hope this helps.

Philippe Mori 27-Jan-15 13:01pm

Well, it depends on how much precision you need. If you need only a rough approximation, then High school mathematics might be enough otherwise you might need to find/buy a library that does that. There are many mapping that approximate the earth surface some of which are optimized for some regions or for some other criteria like lines, distances...

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OriginalGriff · Answer 1 · 2015-01-27T05:46:00

Solution 1

It doesn't quite work like that.
We do not do your work for you.
If you want someone to write your code, you have to pay - I suggest you go to Freelancer.com and ask there.

But be aware: you get what you pay for. Pay peanuts, get monkeys.

Posted 27-Jan-15 5:46am

OriginalGriff