Remove duplicate element pairs from multidimensional array

Question

I have an array that looks like this:

1.  coordinates = [ [16.343345, 35.123523],
2.                  [14.325423, 34.632723],
3.                  [15.231512,         


        

Answer 1

It might be simpler to create another array keeping only unique coordinate pairs

var uniqueCoors = [];
var doneCoors = [];
for(var x = 0; x < coordinates.length; x++) {
    var coorStr = coordinates[x].toString();

    if(doneCoors.indexOf(coorStr) != -1) {
        // coordinate already exist, ignore
        continue;
    }

    doneCoors.push(coorStr);
    uniqueCoors.push(coordinates[x]);
}