Chart.js - 径向轴

径向轴用于径向图表，例如雷达图或极区图。该径向轴基本上是在角度和径向方向上映射点的单个轴。径向轴不是位于图表的边缘之一，而是覆盖图表区域。

例子

让我们举一个例子，我们将使用径向轴来创建图表 -

<!DOCTYPE>
<html>
<head>
   <meta charset- "UTF-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
   <title>chart.js</title>
</head>
<body>
   <canvas id="chartId" aria-label="chart" height="300" width="580"></canvas>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/3.1.1/chart.min.js"></script>
   <script>
      var chrt = document.getElementById("chartId").getContext("2d");
      var chartId = new Chart(chrt, {
         type: 'radar',
         data: {
            labels: ["HTML", "CSS", "JAVASCRIPT", "CHART.JS", "JQUERY", "BOOTSTRP"],
            datasets: [{
               label: "online tutorial subjects",
               data: [20, 40, 33, 35, 30, 38],
               backgroundColor: ['lightgrey'],
               pointBackgroundColor: ['yellow', 'aqua', 'pink', 'lightgreen', 'lightblue', 'gold'],
               borderColor: ['black'],
               borderWidth: 1,
               pointRadius: 6,
            }],
         },
         options: {
            responsive: false,
            scales: {
               r: {
                  suggestedMin: 40,
                  suggestedMax: 40
               }
            }
         },
      });
   </script>
</body>
</html>

输出

径向轴