快速入门

下面是一个显示饼图的网页的简单示例:

您可以将以下代码段复制到计算机上的 .html 文件中,然后在浏览器中打开该文件,以显示上面显示的饼图:

<html>
 
<head>
   
<!--Load the AJAX API-->
   
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
   
<script type="text/javascript">

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

     
// Set a callback to run when the Google Visualization API is loaded.
      google
.charts.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]
       
]);

       
// Set chart options
       
var options = {'title':'How Much Pizza I Ate Last Night',
                       
'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);
     
}
   
</script>
 
</head>

 
<body>
   
<!--Div that will hold the pie chart-->
   
<div id="chart_div"></div>
 
</body>
</html>

条形图是怎样的呢?

将代码中的 google.visualization.PieChart 替换为 google.visualization.BarChart 并重新加载浏览器,将饼图转换为条形图。您可能会注意到,“切片”图例被截断。要解决此问题,请将 width 从 400 更改为 500,保存文件并重新加载浏览器。