Google Charts - Basic Calendar Chart


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Following is an example of a basic calendar chart. A calendar chart is used to visualize a data over period of time. We've already seen the configuration used to draw this chart in Google Charts Configuration Syntax chapter. So, let's see the complete example.

Configurations

We've used Calendar class to show calendar based chart.

//Calendar chart
var chart = new google.visualization.Calendar(document.getElementById('container'));

Example

googlecharts_calendar_basic.htm

<html>
   <head>
      <title>Google Charts Tutorial</title>
      <script type = "text/javascript" src = "https://www.gstatic.com/charts/loader.js">
      </script>
      <script type = "text/javascript">
         google.charts.load('current', {packages: ['corechart','calendar']});     
      </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({ type: 'date', id: 'Date' });
            data.addColumn({ type: 'number', id: 'Students' });
            data.addRows([
               [ new Date(2012, 3, 13), 50 ],
               [ new Date(2012, 3, 14), 50 ],
               [ new Date(2012, 3, 15), 49 ],
               [ new Date(2012, 3, 16), 48 ],
               [ new Date(2012, 3, 17), 50 ],
               
               [ new Date(2012, 4, 1), 50 ],
               [ new Date(2012, 4, 2), 50 ],
               [ new Date(2012, 4, 3), 49 ],
               [ new Date(2012, 4, 4), 48 ],
               [ new Date(2012, 4, 5), 50 ],
               
               [ new Date(2012, 5, 4), 40 ],
               [ new Date(2012, 5, 5), 50 ],
               [ new Date(2012, 5, 10), 48 ],
               [ new Date(2012, 5, 11), 50 ],
               [ new Date(2012, 5, 12), 42 ],
               [ new Date(2012, 5, 20), 45 ],
               [ new Date(2012, 5, 21), 46 ],
               [ new Date(2012, 5, 29), 45 ],
               
               [ new Date(2013, 3, 13), 40 ],
               [ new Date(2013, 3, 14), 40 ],
               [ new Date(2013, 3, 15), 39 ],
               [ new Date(2013, 3, 16), 38 ],
               [ new Date(2013, 3, 17), 40 ],
               
               [ new Date(2013, 4, 1), 40 ],
               [ new Date(2013, 4, 2), 40 ],
               [ new Date(2013, 4, 3), 49 ],
               [ new Date(2013, 4, 4), 48 ],
               [ new Date(2013, 4, 5), 40 ],
               
               [ new Date(2013, 5, 4), 40 ],
               [ new Date(2013, 5, 5), 50 ],
               [ new Date(2013, 5, 12), 48 ],
               [ new Date(2013, 5, 13), 40 ],
               [ new Date(2013, 5, 19), 32 ],
               [ new Date(2013, 5, 23), 45 ],
               [ new Date(2013, 5, 24), 36 ],
               [ new Date(2013, 5, 30), 45 ]
            ]);

               
            // Set chart options
            var options = {'title':'Attendence', 'width':550, 'height':400};

            // Instantiate and draw the chart.
            var chart = new google.visualization.Calendar(document.getElementById('container'));
            chart.draw(data, options);
         }
         google.charts.setOnLoadCallback(drawChart);
      </script>
   </body>
</html>

Result

Verify the result.

googlecharts_calendar_charts.htm
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