JavaScript - How to create random longitude and latitudes?

Question

I am trying to create random longitude and latitudes. I need to create numbers between -180.000 and +180.000. So, I might get 101.325 or -3.546 or -179.561.

Can y

Answer 1

Math.random()*360 - 180

that will get you a range of -180 to 180

And if you really only want 3 decimal places

Math.round((Math.random()*360 - 180) * 1000)/1000

Answer 2

Here is a function I made that does this:

function Rand(x, y){
    //Returns a random number between 0 and X if Y is undefined
    //Returns a random number between X and Y if Y is defined

    return x+(Math.random()*(y-x)) || Math.random()*x;
}

This works with integers as well as floats.

Answer 3

This should work

Math.random() * 360 - 180

Answer 4

function generateRandomLatLng()
{
    var num = Math.random()*180;
    var posorneg = Math.floor(Math.random());
    if (posorneg == 0)
    {
        num = num * -1;
    }
    return num;
}

Answer 5

function getRandomInRange(from, to, fixed) {
    return (Math.random() * (to - from) + from).toFixed(fixed) * 1;
    // .toFixed() returns string, so ' * 1' is a trick to convert to number
}

In your case: getRandomInRange(-180, 180, 3):

12.693
-164.602
-7.076
-37.286
52.347
-160.839

Answer 6

You can try http://www.geomidpoint.com/random/

Features:

• Random Location in Circular region - centred at the starting point
• Random Location in Rectangular region - north, south, west and east limits
• Retrieve Locations in different formates like csv and json