Google Charts - Customized Calendar Chart

Following is an example of a customized 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 configuration to customize the calendar.

// Set chart options
var options = {
   calendar: {
      yearLabel: {
         fontName: 'Times-Roman',
         fontSize: 32,
         color: '#1A8763',
         bold: true,
         italic: true
      },
      
      monthOutlineColor: {
         stroke: '#981b48',
         strokeOpacity: 0.8,
         strokeWidth: 2
      },
      
      unusedMonthOutlineColor: {
         stroke: '#bc5679',
         strokeOpacity: 0.8,
         strokeWidth: 1
      }		 
   }
};

Example

googlecharts_calendar_customized.htm

Live Demo

<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,
               calendar: {
               
                  yearLabel: {
                     fontName: 'Times-Roman',
                     fontSize: 32,
                     color: '#1A8763',
                     bold: true,
                     italic: true
                  },
               
                  monthOutlineColor: {
                     stroke: '#981b48',
                     strokeOpacity: 0.8,
                     strokeWidth: 2
                  },
               
                  unusedMonthOutlineColor: {
                     stroke: '#bc5679',
                     strokeOpacity: 0.8,
                     strokeWidth: 1
                  }		 
               }
            };

            // 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