WordFrequencyData.js

  function normalize(array, field, max)
  {
    var highValue = getHighValue(array, field);
    var divisor   = highValue / max;

    return array.map(function(x) {
      x[field] = x[field] / divisor;
      return x;
    });
  }

  function getHighValue(array, field) {
    return Math.max.apply(null, array.map(function(x) {
      return x[field];
    }));
  }
  
  // EXAMPLE USAGE
  var normalized = normalize(someData, 'value', 150);