在一个图表中显示多个google图表

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>

google.charts.load('current', {'packages':['corechart', 'piechart']});

google.charts.setOnLoadCallback(drawChart);

function drawChart() {
  // 创建数据表
  var data = new google.visualization.DataTable();
  // 添加数据列和数据行

  // 创建图表包装器
  var chart1 = new google.visualization.ChartWrapper({
    chartType: 'ColumnChart',
    containerId: 'chart1_div',
    dataTable: data,
    options: {
      // 图表选项
    }
  });

  var chart2 = new google.visualization.ChartWrapper({
    chartType: 'PieChart',
    containerId: 'chart2_div',
    dataTable: data,
    options: {
      // 图表选项
    }
  });

  // 绘制图表
  chart1.draw();
  chart2.draw();
}

<div id="chart1_div"></div>
<div id="chart2_div"></div>