Chart.js - 混合圖表

Chart.js 還為我們提供了建立由兩個或不同圖表型別組合而成的圖表的功能。此類圖表被稱為混合圖表。chart.js 混合圖表的常見示例之一是包含折線資料集的條形圖。

語法

在混合圖表建立語法如下 −

type: 'scatter',
datasets: [
   { type: 'scatter', data: value, },
   { type: 'bar', data: value, },
]

示例

我們舉一個例子，透過它我們將建立一個混合圖 −

<!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: 'scatter',
         data: {
            labels: ["HTML", "CSS", "JAVASCRIPT", "CHART.JS", "JQUERY", "BOOTSTRP"],
            datasets: [{
                  type: 'scatter',
                  label: "online tutorial subjects",
                  data: [
                     {x:10, y:14},
                     {x:25, y:35},
                     {x:21, y:20},
                     {x:35, y:28},
                     {x:15, y:10},
                     {x:19, y:30}
                  ],
                  backgroundColor: ['yellow', 'aqua', 'pink', 'lightgreen', 'gold', 'lightblue'],
                  borderColor: ['black'],
                  radius: 8,
               },
               {
                  type: 'polarArea',
                  label: "online tutorial exam",
                  data: [20, 40, 30, 35, 30, 20],
                  backgroundColor: ['navy', 'aqua', 'pink', 'lightgreen', 'lightblue', 'gold'],
                  borderColor: ['black'],
                  borderWidth: 2,
                  pointRadius: 5,
               }
            ],
         },
         options: {
            responsive: false,
            scales: {
               y: {
                  beginAtZero: true
               }
            }
         },
      });
   </script>
</body>
</html>

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