Find max value comparing multiple arrays for each index

Question

I\'m trying to find a method to find the max value comparing multiple(unknown number, but same length) arrays for each observation in the arrays, returning an array with the max

Answer 1

var data = [
    [2.2, 3.3, 1.3],
    [1.2, 5.3, 2.2],
    [0.3, 2.2, 5.2]
];

function maxAtIndex (data) {
    //output
    var maxArray = [];
    //loop arrays passed in
    for (var i = 0; i < data[0].length; i++) {
        var possibleValues = [];
        //get value in array at index
        for (var j = 0; j < data.length; j++) {
            possibleValues.push(data[j][i]);
        }
        //get the highest from possible values
        var highest = Math.max.apply(null, possibleValues);
        //store in output array
        maxArray.push(highest);
    }
    return maxArray;
};

console.log(maxAtIndex(data)); //[ 2.2, 5.3, 5.2 ]