如何用JavaScript通过C++设置类别轴
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可能的使用场景
在工作表中创建图表后，您可以为其设置类别轴。本文将向您展示如何使用Aspose.Cells for Java脚本通过C++，配合示例代码，为Excel图表设置类别轴。
示例代码中的步骤
-
创建一个新的工作簿。
-
在第一个工作表中创建一个新的图表。
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在第一个工作表的单元格中添加一些值。
现在可以设置类别轴；有两种方法：使用单元格数据或直接使用字符串，示例代码中均有显示。
设置值轴，并保存工作簿以查看结果。
示例代码
<!DOCTYPE html>
<html>
<head>
<title>Aspose.Cells Example</title>
</head>
<body>
<h1>Aspose.Cells 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, ChartType, LegendPositionType, 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 () => {
// Create a new workbook
const workbook = new Workbook();
const worksheet = workbook.worksheets.get(0);
worksheet.name = "CHART";
// Add a chart to the worksheet
const chartIndex = worksheet.charts.add(ChartType.Column, 8, 0, 20, 10);
const chart = worksheet.charts.get(chartIndex);
// Add some values to cells
worksheet.cells.get("A1").putValue("Sales");
worksheet.cells.get("A2").putValue(100);
worksheet.cells.get("A3").putValue(150);
worksheet.cells.get("A4").putValue(130);
worksheet.cells.get("A5").putValue(160);
worksheet.cells.get("A6").putValue(150);
worksheet.cells.get("B1").putValue("Days");
worksheet.cells.get("B2").putValue(1);
worksheet.cells.get("B3").putValue(2);
worksheet.cells.get("B4").putValue(3);
worksheet.cells.get("B5").putValue(4);
worksheet.cells.get("B6").putValue(5);
// Some values in string
const Sales = "100,150,130,160,150";
const Days = "1,2,3,4,5";
// Set Category Axis Data with string
chart.nSeries.categoryData = `{${Days}}`;
// Or you can set Category Axis Data with data in cells
// chart.nSeries.categoryData = "B2:B6";
// Add Series to the chart
chart.nSeries.add("Demand1", true);
// Set value axis with string
chart.nSeries.get(0).values = `{${Sales}}`;
chart.nSeries.add("Demand2", true);
// Set value axis with data in cells
chart.nSeries.get(1).values = "A2:A6";
// Set some Category Axis properties
chart.categoryAxis.tickLabels.rotationAngle = 45;
chart.categoryAxis.tickLabels.font.size = 8;
chart.legend.position = LegendPositionType.Bottom;
// Save the workbook to view the result file
const outputData = workbook.save(SaveFormat.Xlsx);
const blob = new Blob([outputData]);
const downloadLink = document.getElementById('downloadLink');
downloadLink.href = URL.createObjectURL(blob);
downloadLink.download = 'Output.xlsx';
downloadLink.style.display = 'block';
downloadLink.textContent = 'Download Excel File';
document.getElementById('result').innerHTML = '<p style="color: green;">Workbook created. Click the download link to get the file.</p>';
});
</script>
</html>