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

You can combine Lo-Dash's zip and map methods to do this in just a few lines of code:

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

// Creates an array of arrays, where the first array is all the first elements,
// the second array is all the second elements, etc.
var zipped = _.zip(A);
var maxes = _.map(zipped, function(arr) {
    return _.max(arr);
});
console.log(maxes);