javascript 如何将另一个数据系列添加到 Google 图表
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How to add another data series to a Google chart
提问by Tys
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
我按照此页面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);
}
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,
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。任何人都可以指出我如何做到这一点的正确方向吗？
我想添加的数据，一个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个新行，并且不是从 2004 年开始，而是从 2005 年开始，
采纳答案by EricSonaron
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
您需要将新数据添加到 'data' 变量并再次调用 chart.draw() 方法。查看 DataTable 文档或在http://code.google.com/apis/ajax/playground/?type=visualization#line_chart 上玩一下
Example:
例子：
// Add columns
data.addColumn('string', 'Employee Name');
data.addColumn('date', 'Start Date');
// Add empty rows
data.addRows(6);
data.setCell(0, 0, 'Mike');
data.setCell(0, 1, {v:new Date(2008,1,28), f:'February 28, 2008'});
data.setCell(1, 0, 'Bob');
data.setCell(1, 1, new Date(2007, 5, 1));
data.setCell(2, 0, 'Alice');
data.setCell(2, 1, new Date(2006, 7, 16));
data.setCell(3, 0, 'Frank');
data.setCell(3, 1, new Date(2007, 11, 28));
data.setCell(4, 0, 'Floyd');
data.setCell(4, 1, new Date(2005, 3, 13));
data.setCell(5, 0, 'Fritz');
data.setCell(5, 1, new Date(2007, 9, 2));
