如何将另一个数据系列添加到 Google 图表
我按照本页上的示例设置了一个简单的 Google 图表: http://code.google.com/apis/chart/interactive /docs/gallery/linechart.html
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Year');
data.addColumn('number', 'Sales');
data.addColumn('number', 'Expenses');
data.addRows([
['2004', 1000, 400],
['2005', 1170, 460],
['2006', 860, 580],
['2007', 1030, 540]
]);
var options = {
width: 400, height: 240,
title: 'Company Performance'
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
但是现在,在渲染之后,我想使用一些 javascript 动态添加另一系列数据。谁能指出我如何做到这一点的正确方向?
我要添加的数据(包含员工人数的数字列)应该在图表中以另一种颜色显示一条新线,并且不是从 2004 年开始而是从 2005 年开始,
I have setup a simple Google Chart by following the example on this page:
http://code.google.com/apis/chart/interactive/docs/gallery/linechart.html
google.load("visualization", "1", {packages:["corechart"]});
google.setOnLoadCallback(drawChart);
function drawChart() {
var data = new google.visualization.DataTable();
data.addColumn('string', 'Year');
data.addColumn('number', 'Sales');
data.addColumn('number', 'Expenses');
data.addRows([
['2004', 1000, 400],
['2005', 1170, 460],
['2006', 860, 580],
['2007', 1030, 540]
]);
var options = {
width: 400, height: 240,
title: 'Company Performance'
};
var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
chart.draw(data, options);
}
But now, after it's rendered, with some javascript i want to dynamically add another series of data. Can anyone point me in the right direction on how to do this?
The data i want to add, a number column with the number of employees, should show a new line in the chart, in another color and doesn't start at year 2004 but at 2005,
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您需要将新数据添加到“data”变量并再次调用chart.draw()方法。
请参阅 DataTable 文档或访问 http://code.google .com/apis/ajax/playground/?type=visualization#line_chart
示例:
You need to add new data to 'data' variable and call the chart.draw() method again.
See the DataTable docs or play a bit at http://code.google.com/apis/ajax/playground/?type=visualization#line_chart
Example: