代码
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width,initial-scale=1.0" />
<title>Echarts Example</title>
</head>
<body>
<div id="main" style="width: 600px;height: 400px"></div>
<script src="//cdn.bootcss.com/echarts/4.5.0/echarts.js"></script>
<script type="text/javascript">
var myChart = echarts.init(document.getElementById('main'));
var data = [];
var max = 300;
for (var i = 0; i <= max; i++) {
var angle = Math.ceil(i * ((360 * 6) / max));
// 根据阿基米德螺旋公式：
// r = a + b * θ
var r = angle;
data.push([r, angle]);
}
var option = {
toolbox: {
feature: {
saveAsImage: {},
},
},
polar: {},
angleAxis: {
type: 'value',
startAngle: 0,
min: 0,
max: 360,
},
radiusAxis: {},
series: [{ showSymbol: false, coordinateSystem: 'polar', type: 'line', data: data }],
};
myChart.setOption(option);
</script>
</body>
</html>
运行结果