sai111 opened a new issue #8450: 动态嵌套饼图时， Cannot read property 'startAngle' of undefined URL: https://github.com/apache/incubator-echarts/issues/8450 <!-- 为了方便我们能够复现和修复 bug，请遵从下面的规范描述您的问题。 --> ### One-line summary [问题简述] 动态嵌套饼图，使用onmouseover 经过外层饼图，内层饼图动态发生变化，出现 PieView.js:38 Uncaught TypeError: Cannot read property 'startAngle' of undefined at toggleItemSelected (PieView.js:38) at PiePiece.webpackJsonp../node_modules/[email protected]@echarts/lib/chart/pie/PieView.js.piePieceProto.updateData (PieView.js:126) at DataDiffer._update (PieView.js:256) at DataDiffer.execute (DataDiffer.js:76) at ExtendedClass.render (PieView.js:264) at Task.progress [as _progress] (Chart.js:228) at Task.webpackJsonp../node_modules/[email protected]@echarts/lib/stream/task.js.taskProto.perform (task.js:89) at echarts.js:1330 at ExtendedClass.<anonymous> (Global.js:479) at Array.forEach (<anonymous>) 具体代码 function toggleItemSelected(el, layout, isSelected, selectedOffset, hasAnimation) { var midAngle = (layout.startAngle + layout.endAngle) / 2; **这里出现问题 Cannot read property 'startAngle' of undefined** var dx = Math.cos(midAngle); var dy = Math.sin(midAngle); var offset = isSelected ? selectedOffset : 0; var position = [dx * offset, dy * offset]; hasAnimation // animateTo will stop revious animation like update transition ? el.animate().when(200, { position: position }).start('bounceOut') : el.attr('position', position); } ### Version & Environment [版本及环境] + ECharts version [ECharts 版本]: + Browser version [浏览器类型和版本]: + OS Version [操作系统类型和版本]: echarts 版本 4.0.4 浏览器 chroom 11 window10 ### Expected behaviour [期望结果] 不再出现找不到 startAngle undefined ### ECharts option [ECharts配置项] <!-- Copy and paste your 'echarts option' here. --> <!-- [下方贴你的option，注意不要删掉下方 ```javascript 和 尾部的 ``` 字样。最好是我们能够直接运行的 option。如何得到能运行的 option 参见上方的 guidelines for contributing] --> ```javascript this.chart.on("mouseover", function(params) { if (params.seriesName === "外层的数据") { var id = params.data.id _this.patrol_pie_problem.series[0].data = _this.dispatch_finish[id] _this.chart.setOption({ ...patrol_pie_problem }) } }) const CommonColor = [ "#1668FF", "#4974FF", "#299EFF", "#29CAFF", "#00FFFF", "#FF9711", "#FFD34E", "#FFE44E", "#F0FF4E" ] option = { title: { text: "", left: "center", top: 20, textStyle: { color: "#fff", align: "right" } }, tooltip: { trigger: 'item', formatter: "{a} <br/>{b}: {c} ({d}%)", }, legend: { show: true, type: 'scroll', data: [], selected: true, bottom: 20, left: 10, right: 10, pageIconColor: '#299eff', pageIconInactiveColor: '#299eff', pageIconSize: 10, pageTextStyle: { fontSize: 10, color: '#fff', }, textStyle: { color: "#fff", fontSize: '10' }, color: CommonColor }, series: [ { color: ["#4974FF", "#299EFF"], name: '完成率', type: 'pie', radius: [0, '30%'], label: { normal: { position: 'inner' } }, labelLine: { normal: { show: false } }, data: [] }, { color: CommonColor, name: '公司', type: 'pie', radius: ['40%', '55%'], label: { normal: { show: false }, emphasis: { show: true } }, data: [] } ] } ``` ### Other comments [其他信息] <!-- For example: Screenshot or Online demo --> <!-- [例如，截图或线上实例 (JSFiddle/JSBin/Codepen)] -->
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