如何减少 amcharts4 中的 PieChart 边框大小（宽度）？

Question

如何减小 amcharts 中的 PieChart 边框大小（宽度），如下所示？我想像第二个一样减小第一个图表边框大小（宽度）。我已经将 innerRadius 属性设置为 100%。

Answer 1

您必须将 innerRadius 和 radius 都增加到足够大的值以使圆更细。

chart.innerRadius = am4core.percent(100);
chart.radius = am4core.percent(100);

演示：

var chart = am4core.create("chartdiv", am4charts.PieChart);

chart.data = [{
  "category": "",
  "value": 100
}];

chart.innerRadius = am4core.percent(100)
chart.radius = am4core.percent(100) 

var pieSeries = chart.series.push(new am4charts.PieSeries());
pieSeries.dataFields.value = "value";
pieSeries.dataFields.category = "category";
pieSeries.ticks.template.disabled = true;
pieSeries.labels.template.disabled = true;
var label = pieSeries.createChild(am4core.Label)
label.text = "100%";
label.horizontalCenter = "middle";
label.verticalCenter = "middle";
label.fontSize = "2em";

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

#chartdiv {
  width: 200px;
  height: 200px;
}

<script src="https://cdn.amcharts.com/lib/4/core.js"></script>
<script src="https://cdn.amcharts.com/lib/4/charts.js"></script>
<div id="chartdiv"></div>

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