google charts customizable sankey chart tutorial

Code

<!DOCTYPE html>
<html>
<head>
<title>Google Charts tutorial Tutorial</title>
   <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
   <script type="text/javascript" src="https://www.google.com/jsapi"></script>
   <script type="text/javascript">
     google.charts.load('current', {packages: ['sankey']});     
   </script>
</head>
<body>
<div id="container" style="width: 550px; height: 400px; margin: 0 auto"></div>
<script language="JavaScript">
function drawChart() {
// Define the chart to be drawn.
   var data = new google.visualization.DataTable();   
   data.addColumn('string', 'From');
   data.addColumn('string', 'To');
   data.addColumn('number', 'Weight');

data.addRows([
      [ 'Brazil', 'China', 5 ],
      [ 'Brazil', 'France', 1 ],
      [ 'Brazil', 'Spain', 2 ],
      [ 'Brazil', 'japan', 3 ],
      [ 'Canada', 'China', 4 ],
      [ 'Canada', 'France', 5 ],
      [ 'Canada', 'japan', 1 ],
      [ 'Mexico', 'China', 2 ],
      [ 'Mexico', 'France', 3 ],
      [ 'Mexico', 'Spain', 5 ],
      [ 'Mexico', 'japan', 1 ],
      [ 'USA', 'China', 2 ],
      [ 'USA', 'France', 3 ],
      [ 'USA', 'Spain', 4 ],
      [ 'USA', 'japan', 5 ]
   ]);

// Set chart options
   var options = {
      width: 550,
      sankey: {
        node: { colors: [ '#a61d4c' ] },
        link: { color: { stroke: 'black', strokeWidth: 1 } },
      }
   };
		
   // Instantiate and draw the chart.
   var chart = new google.visualization.Sankey(document.getElementById('container'));
   chart.draw(data, options);
}
google.charts.setOnLoadCallback(drawChart);
</script>
</body>
</html>

Result