如何在Chart.JS的半个甜甜圈图中添加一些文本? [英] How can I add some text in the middle of a half doughnut chart in Chart.JS?
问题描述
它看起来应该像这样:
我已经有了图表,只是缺少了文字。
编辑:可以在此处找到这种图形的示例:
感谢 @DTul ,我知道了。标题配置在此处: https://www.chartjs.org/docs/ Latest / configuration / title.html 。
我添加了以下部分:
标题:{
显示:true,
文本:自定义图表标题,
位置:底部
}
到选项
。
整个示例现在看起来像这样:
var ctx = document.getElementById( myChart) ;
var myChart = new Chart(ctx,{
type:'doughnut',
data:{
标签:[红色,蓝色,黄色,绿色,紫色,橙色],
数据集:[{{
标签:'#of Votes',
数据:[12、19、3、5、2、3 ],
backgroundColor:[
'rgba(255,99,132,0.2)',
'rgba(54,162,235,0.2)',
'rgba( 255,206,86,0.2)',
'rgba(75,192,192,0.2)',
'rgba(153,102,255,0.2)',
'rgba (255,159,64,0.2)'
],
borderColor:[
'rgba(255,99,132,1)',
'rgba(54,162,235 ,1)',
'rgba(255,206,86,1)',
'rgba(75,192,192,1)',
'rgba(153,102, 255,1)',
'rgba(255,159,64,1)'
],
borderWidth:1
}]
},
选项:{
旋转度:1 * Math.PI,
圆周:1 * Math.PI,
标题:{
显示:true,
文本:'Custom图表标题,
位置:底部
}
}
});
相应的小提琴在这里: https://jsfiddle.net/ktq8mb0z/
It should look somehow like this:
I already have the chart, just the text is missing. Is there an option to get the text in the middle of the chart?
EDIT: An example of such a graph can be found here: https://jsfiddle.net/wt4260qf/1/
var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
type: 'doughnut',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
rotation: 1 * Math.PI,
circumference: 1 * Math.PI
}
});
Thanks to @DTul, I figured it out. The title configuration is here: https://www.chartjs.org/docs/latest/configuration/title.html.
I've added the following section:
title: {
display: true,
text: 'Custom Chart Title',
position: 'bottom'
}
to the options
.
The whole example looks now like that:
var ctx = document.getElementById("myChart");
var myChart = new Chart(ctx, {
type: 'doughnut',
data: {
labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
datasets: [{
label: '# of Votes',
data: [12, 19, 3, 5, 2, 3],
backgroundColor: [
'rgba(255, 99, 132, 0.2)',
'rgba(54, 162, 235, 0.2)',
'rgba(255, 206, 86, 0.2)',
'rgba(75, 192, 192, 0.2)',
'rgba(153, 102, 255, 0.2)',
'rgba(255, 159, 64, 0.2)'
],
borderColor: [
'rgba(255,99,132,1)',
'rgba(54, 162, 235, 1)',
'rgba(255, 206, 86, 1)',
'rgba(75, 192, 192, 1)',
'rgba(153, 102, 255, 1)',
'rgba(255, 159, 64, 1)'
],
borderWidth: 1
}]
},
options: {
rotation: 1 * Math.PI,
circumference: 1 * Math.PI,
title: {
display: true,
text: 'Custom Chart Title',
position: 'bottom'
}
}
});
The corresponding fiddle is here: https://jsfiddle.net/ktq8mb0z/
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