text: /* ------------------------------------------------------------------------------
   *
   *  # Google Visualization - diff pie
   *
   *  Google Visualization diff pie chart with radius factor demonstration
   *
   * ---------------------------------------------------------------------------- */
  
  
  // Setup module
  // ------------------------------
  
  var GooglePieDiff = function() {
  
  
      //
      // Setup module components
      //
  
      // Pie with radius factor
      var _googlePieDiff = function() {
          if (typeof google == 'undefined') {
              console.warn('Warning - Google Charts library is not loaded.');
              return;
          }
  
          // Initialize chart
          google.charts.load('current', {
              callback: function () {
  
                  // Draw chart
                  drawPieDiff();
  
                  // Resize on sidebar width change
                  $(document).on('click', '.sidebar-control', drawPieDiff);
  
                  // Resize on window resize
                  var resizePieDiff;
                  $(window).on('resize', function() {
                      clearTimeout(resizePieDiff);
                      resizePieDiff = setTimeout(function () {
                          drawPieDiff();
                      }, 200);
                  });
              },
              packages: ['corechart']
          });
  
          // Chart settings
          function drawPieDiff() {
  
              // Define charts element
              var pie_diff_element = document.getElementById('google-pie-diff-radius');
  
              // Old data
              var oldData = google.visualization.arrayToDataTable([
                  ['Major', 'Degrees'],
                  ['Business', 256070], ['Education', 108034],
                  ['Social Sciences & History', 127101], ['Health', 81863],
                  ['Psychology', 74194]
              ]);
  
              // New data
              var newData = google.visualization.arrayToDataTable([
                  ['Major', 'Degrees'],
                  ['Business', 358293], ['Education', 101265],
                  ['Social Sciences & History', 172780], ['Health', 129634],
                  ['Psychology', 97216]
              ]);
  
              // Options
              var options = {
                  fontName: 'Roboto',
                  height: 300,
                  width: 500,
                  chartArea: {
                      left: 50,
                      width: '90%',
                      height: '90%'
                  },
                  diff: {
                      innerCircle: {
                          radiusFactor: 0.8
                      }
                  }
              };
  
              // Attach chart to the DOM element
              var chartRadius = new google.visualization.PieChart(pie_diff_element);
  
              // Set data
              var diffData = chartRadius.computeDiff(oldData, newData);
  
              // Draw our chart, passing in some options
              chartRadius.draw(diffData, options);
          }
      };
  
  
      //
      // Return objects assigned to module
      //
  
      return {
          init: function() {
              _googlePieDiff();
          }
      }
  }();
  
  
  // Initialize module
  // ------------------------------
  
  GooglePieDiff.init();
  