想要在Google饼图的图例中显示百分比数据
问题描述：
我在我的代码中使用的是Google Charts API特别是饼图，我想显示在图表内也显示图例的百分比
I am using google charts API specifically pie chart in my code i want to show percentage which is displayed inside chart to the legends also
如何在图例中显示29.2％的睡眠?
How can i display 29.2% sleep in legend?
答
您可以通过两种方式执行此操作；要么在DataTable中设置标签的格式化值以包含百分比，例如:
You can do this two ways; either set the formatted values of the labels in the DataTable to include the percents, eg:
// assume sleep is row 4, "sleepPercent" is the percent for sleep
data.setFormattedValue(4, 0, data.getValue(4, 0) + ' (' + (sleepPercent * 100).toFixed(1) + '%)');
，或者您可以将legend.position选项设置为"labeled"，这将更改图例的绘制方式，但会将百分数添加到标签中:
or you can set the legend.position option to "labeled", which changes the way the legend is drawn, but adds the percents to the labels:
legend: {
position: 'labeled'
}
在此处查看示例: http://jsfiddle.net/asgallant/Su6TX/