将仪表板中的谷歌图表导出为 png
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【中文标题】将仪表板中的谷歌图表导出为 png【英文标题】:Export google chart in a dashboard as png 【发布时间】:2015-08-14 11:50:17 【问题描述】:我正在尝试通过按钮 图像。但我收到以下错误-
一个或多个参与者未能绘制() undefined 不是函数
代码如下:
<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 controls package.
google.load('visualization', '1.0', 'packages':['controls']);
// Set a callback to run when the Google Visualization API is loaded.
google.setOnLoadCallback(drawDashboard);
// Callback that creates and populates a data table,
// instantiates a dashboard, a range slider and a pie chart,
// passes in the data and draws it.
function drawDashboard()
// Create our data table.
var data = google.visualization.arrayToDataTable([
['Name', 'Donuts eaten'],
['Michael' , 5],
['Elisa', 7],
['Robert', 3],
['John', 2],
['Jessica', 6],
['Aaron', 1],
['Margareth', 8]
]);
// Create a dashboard.
var dashboard = new google.visualization.Dashboard(
document.getElementById('dashboard_div'));
// Create a range slider, passing some options
var select = new google.visualization.ControlWrapper(
'controlType': 'CategoryFilter',
'containerId': 'filter_div',
'options':
'filterColumnLabel': 'Donuts eaten'
);
// Create a pie chart, passing some options
var chart = new google.visualization.ChartWrapper(
'chartType': 'ColumnChart',
'containerId': 'chart_div',
'options':
'width': 500,
'height': 300,
'legend': 'right'
);
google.visualization.events.addListener(chart, 'ready', function(e)
document.getElementById('png').outerHTML = '<a href="' + chart.getImageURI() + '">Printable version</a>';
);
// Establish dependencies, declaring that 'filter' drives 'pieChart',
// so that the pie chart will only display entries that are let through
// given the chosen slider range.
dashboard.bind(select, chart);
// Draw the dashboard.
dashboard.draw(data);
</script>
</head>
<body>
<div id='png'></div>
<!--Div that will hold the dashboard-->
<div id="dashboard_div">
<!--Divs that will hold each control and chart-->
<div id="filter_div"></div>
<div id="chart_div"></div>
</div>
</body>
</html>
请帮助我哪里出错了。
【问题讨论】:
【参考方案1】:小提琴总是有帮助的!
https://jsfiddle.net/kujxsn7z/
我改变的东西:
创建了一个 div 来保存 PNG 输出您尝试调用的方法getImageURI() 失败,因为您将它应用到 chartWrapper,不在图表对象上。所以要解决这个问题,你需要打电话, 在你的例子中:
chart.getChart().getImageURI()
所以你引用你的chartWrapper,使用getChart来引用它包含的图表,然后在图表对象本身上执行getImageIRI()。
【讨论】:
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