如何使用 JavaScript 结合 C++ 创建 Sunburst 图表
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可能的使用场景
树状图非常适合比较层级内的比例；然而，树状图不擅长显示最大类别与每个数据点之间的层级关系。太阳放射图是更好的视觉图表，用于显示这些关系。太阳放射图理想于显示层级数据。每一层由一个环或圆圈表示，最内层代表层级顶部。没有层级数据（只有一层类别）的太阳放射图类似于甜甜圈图，但具有多个层级的太阳放射图展示了外环与内环的关系。太阳放射图最有效的用途是展示一环如何分解为其贡献部分，而另一种层级图表，树状图，则适合比较相对大小。
旭日图表
运行下面的代码后，您将会看到如下所示的旭日图表。
示例代码
以下示例代码加载 样本 Excel 文件 并生成 输出 Excel 文件。
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Sunburst Chart Example</title>
</head>
<body>
<h1>Aspose.Cells Sunburst Chart Example</h1>
<input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
<button id="runExample">Run Example</button>
<a id="downloadLink" style="display: none;">Download Result</a>
<div id="result"></div>
</body>
<script src="aspose.cells.js.min.js"></script>
<script type="text/javascript">
const { Workbook, SaveFormat, Utils } = AsposeCells;
AsposeCells.onReady({
license: "/lic/aspose.cells.enc",
fontPath: "/fonts/",
fontList: [
"arial.ttf",
"NotoSansSC-Regular.ttf"
]
}).then(() => {
console.log("Aspose.Cells initialized");
});
document.getElementById('runExample').addEventListener('click', async () => {
const fileInput = document.getElementById('fileInput');
if (!fileInput.files.length) {
document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
return;
}
const file = fileInput.files[0];
const arrayBuffer = await file.arrayBuffer();
const workbook = new Workbook(new Uint8Array(arrayBuffer));
const worksheet = workbook.worksheets.get(0);
const pieIdx = worksheet.charts.add(AsposeCells.ChartType.Sunburst, 5, 6, 25, 12);
const chart = worksheet.charts.get(pieIdx);
chart.showLegend = true;
chart.title.text = "Sunburst Chart";
chart.nSeries.add("D2:D16", true);
chart.nSeries.categoryData = "A2:C16";
chart.nSeries.get(0).dataLabels.showCategoryName = true;
chart.plotArea.area.fillFormat.fillType = AsposeCells.FillType.None;
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'out.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Sunburst chart created successfully! Click the download link to get the modified file.</p>';
});
</script>
</html>