Array Pretty Print

README.md

Pretty print nested arrays

// Instead of
[Array[3], Array[3], Array[3], Array[3], Array[3], Array[3], Array[3], Array[3]]

// or
[ [ 0, 0, 0 ],
  [ 0.5, 0.5, 0.5 ],
  [ 4.667, 2.5, 2.5 ],
  [ 10, 5.167, 3 ],
  [ 22.8, 9.333, 7.167 ],
  [ 45.333, 18, 11.333 ],
  [ 69.714, 24.75, 14 ],
  [ 255.5, 119.333, 74.75 ] ]
  
// get this:

arrayPrettyPrint(x); // yields:

[
  [     0.000,      0.000,      0.000],
  [     0.500,      0.500,      0.500],
  [     4.667,      2.500,      2.500],
  [    10.000,      5.167,      3.000],
  [    22.800,      9.333,      7.167],
  [    45.333,     18.000,     11.333],
  [    69.714,     24.750,     14.000],
  [   255.500,    119.333,     74.750]
]

arrayPrettyPrint.js

function arrayPrettyPrint(a) {
    var s = '[\n';
    for (var i = 0; i < a.length; i++) {
        s += '  [' + a[i].map(function(x) {
            var n = x.toFixed(3)
            while (n.length < 10) {
                n = ' ' + n;
            }
            return n;
        }).join(', ') + ']';
        if (i !== a.length - 1) s += ',';
        s += '\n';
    }
    s += ']';
    return s;
}