How to add two Google charts on the one page?

August 16, 2022 by Tarik Billa

Solution

I now have a working solution. It involved discerning which parts of the example code to duplicate and what not to duplicate (as suggested by Oofpez). The data, options and chart variables for EACH of your charts are defined within the ONE drawChart() function.

Here is a working example (just copy and paste into a HTML document):

…This example further demonstrates how to combine different chart types i.e. pie and line…

<html>
      <head>
        <!--Load the AJAX API-->
        <script type="text/javascript" src="https://www.google.com/jsapi"></script>
        <script type="text/javascript">

          // Load the Visualization API and the piechart package.
          google.load('visualization', '1.0', {'packages':['corechart']});

          // Set a callback to run when the Google Visualization API is loaded.
          google.setOnLoadCallback(drawChart);

          // Callback that creates and populates a data table,
          // instantiates the pie chart, passes in the data and
          // draws it.
          function drawChart() {

            // Create the data table.
            var data = new google.visualization.DataTable();
            data.addColumn('string', 'Topping');    
            data.addColumn('number', 'Slices');
            data.addRows([
              ['Mushrooms', 3],
              ['Onions', 1],
              ['Olives', 1],
              ['Zucchini', 1],
              ['Pepperoni', 2]
            ]);
            // Create the data table.
            var data2 = new google.visualization.DataTable();
            data2.addColumn('string', 'Topping');
            data2.addColumn('number', 'Slices');
            data2.addRows([
              ['Mushrooms', 3],
              ['Onions', 1],
              ['Olives', 15],
              ['Zucchini', 1],
              ['Pepperoni', 2]
            ]);

            var data3 = new google.visualization.DataTable();
            data3.addColumn('string', 'Year');
            data3.addColumn('number', 'Sales');
            data3.addColumn('number', 'Expenses');
            data3.addRows([
              ['2004', 1000, 400],
              ['2005', 1170, 460],
              ['2006',  860, 580],
              ['2007', 1030, 540]
            ]);

            // Set chart options
            var options = {'title':'How Much Pizza I Ate Last Night',
                           'width':400,
                           'height':300};
            // Set chart options
            var options2 = {'title':'How Much Pizza You Ate Last Night',
                           'width':400,
                           'height':300};
            // Set chart options
            var options3 = {'title':'Line chart',
                           'width':400,
                           'height':300};

            // Instantiate and draw our chart, passing in some options.
            var chart = new google.visualization.PieChart(document.getElementById('chart_div'));
            chart.draw(data, options);
            var chart2 = new google.visualization.PieChart(document.getElementById('chart_div2'));
            chart2.draw(data2, options2);
            var chart3 = new google.visualization.LineChart(document.getElementById('chart_div3'));
            chart3.draw(data3, options3);

          }
        </script>
      </head>

      <body>
        <!--Divs that will hold the charts-->
        <div id="chart_div"></div>
        <div id="chart_div2"></div>
        <div id="chart_div3"></div>
      </body>
    </html>

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