通过Node.js和C++管理Excel图表的数据标签
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数据标签是图表的重要组成部分。
我们可以轻松地了解每个系列的值、百分比等。
我们可以轻松地了解每个系列的值、百分比等。
数据标签选项
Aspose.Cells for Node.js via C++还允许在运行时管理图表的数据标签,使用DataLabels对象,简单地移动、更新和格式化图表的数据标签。
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管理图表的数据标签
使用Aspose.Cells DataLabels轻松管理图表的数据标签。
以下代码片段演示了如何管理DataLabels:
const AsposeCells = require("aspose.cells.node");
const path = require("path");
// The path to the documents directory.
const dataDir = path.join(__dirname, "data");
const filePath = path.join(dataDir, "sample.xlsx");
// Instantiating a Workbook object
const workbook = new AsposeCells.Workbook();
// Adding a new worksheet to the Workbook object
const sheetIndex = workbook.getWorksheets().add();
// Obtaining the reference of the newly added worksheet by passing its sheet index
const worksheet = workbook.getWorksheets().get(sheetIndex);
// Adding sample values to cells
worksheet.getCells().get("A1").putValue(50);
worksheet.getCells().get("A2").putValue(100);
worksheet.getCells().get("A3").putValue(150);
worksheet.getCells().get("B1").putValue(60);
worksheet.getCells().get("B2").putValue(32);
worksheet.getCells().get("B3").putValue(50);
// Adding a chart to the worksheet
const chartIndex = worksheet.getCharts().add(AsposeCells.ChartType.Column, 5, 0, 15, 5);
// Accessing the instance of the newly added chart
const chart = worksheet.getCharts().get(chartIndex);
// Adding SeriesCollection (chart data source) to the chart ranging from "A1" cell to "B3"
chart.getNSeries().add("A1:B3", true);
// Show value labels
chart.getNSeries().get(0).getDataLabels().setShowValue(true);
// Show series name labels
chart.getNSeries().get(1).getDataLabels().setShowSeriesName(true);
// Move labels to center
chart.getNSeries().get(1).getDataLabels().setPosition(AsposeCells.LabelPositionType.Center);
// Save the file
workbook.save("chart_datalabels.xlsx");