Morris JS bar chart

HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.css">
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/raphael/2.1.0/raphael-min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.min.js"></script>

<div id="morrisLine" style="height: 450px;"></div>

JavaScript

var transformedData = [
  {
    y: "Gennaio",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 7044,
    g: 0,
    h: 0,
    i: 10338,
    j: 0,
    k: 3428
  },
  {
    y: "Febbraio",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 8189,
    g: 103,
    h: 0,
    i: 4779,
    j: 2006,
    k: 16654
  },
  {
    y: "Marzo",
    a: 0,
    b: 0,
    c: 0,
    d: 5377,
    e: 0,
    f: 7583,
    g: 3301,
    h: 0,
    i: 0,
    j: 337,
    k: 3736
  },
  {
    y: "Aprile",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 20202,
    g: 0,
    h: 0,
    i: 4868,
    j: 0,
    k: 6292
  },
  {
    y: "Maggio",
    a: 0,
    b: 1793,
    c: 0,
    d: 6106,
    e: 0,
    f: 20030,
    g: 20967,
    h: 0,
    i: 1499,
    j: 1402,
    k: 11716
  },
  {
    y: "Giugno",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 11274,
    g: 9798,
    h: 34021,
    i: 5998,
    j: 1032,
    k: 42561
  },
  {
    y: "Luglio",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 15338,
    g: 0,
    h: 42292,
    i: 4420,
    j: 0,
    k: 1452
  },
  {
    y: "Agosto",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 1990,
    f: 3240,
    g: 0,
    h: 0,
    i: 7158,
    j: 517,
    k: 0
  },
  {
    y: "Settembre",
    a: 0,
    b: 0,
    c: 0,
    d: 22193,
    e: 1171,
    f: 0,
    g: 1125,
    h: 4763,
    i: 0,
    j: 0,
    k: 0
  },
  {
    y: "Ottobre",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 0,
    g: 0,
    h: 0,
    i: 0,
    j: 0,
    k: 9317
  },
  {
    y: "Novembre",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 0,
    g: 0,
    h: 0,
    i: 0,
    j: 0,
    k: 0
  },
  {
    y: "Dicembre",
    a: 0,
    b: 0,
    c: 0,
    d: 0,
    e: 0,
    f: 0,
    g: 0,
    h: 0,
    i: 0,
    j: 0,
    k: 0
  }
]
//build the graph
Morris.Line({
  resize: true,
  element: "morrisLine",
  data: transformedData,
  xkey: "y",
  ykeys: ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k"],
  labels: [
    "ATHENA...