通过Node.js与C++管理Excel图表的轴
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在Excel图表中，有3种类型的轴：
- 横轴（类别轴）: X轴
- 垂直（值）轴：Y轴
- 深度（系列）轴：Z轴
轴选项
Aspose.Cells for Node.js via C++还允许您在运行时管理图表的轴。使用Axis对象，您可以像Excel中一样更改轴的所有选项。
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管理X和Y轴
在Excel图表中，横轴和纵轴是最常用的两种轴。
以下代码片段演示了如何设置X轴和Y轴的选项。
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, "chart_axes.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("Series1");
worksheet.getCells().get("A2").putValue(50);
worksheet.getCells().get("A3").putValue(100);
worksheet.getCells().get("A4").putValue(150);
worksheet.getCells().get("B1").putValue("Series2");
worksheet.getCells().get("B2").putValue(60);
worksheet.getCells().get("B3").putValue(32);
worksheet.getCells().get("B4").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 "B4"
chart.setChartDataRange("A1:B4", true);
// Hiding X axis
chart.getCategoryAxis().setIsVisible(false);
// Setting max value of Y axis
chart.getValueAxis().setMaxValue(200);
// Setting major unit
chart.getValueAxis().setMajorUnit(50);
// Save the file
workbook.save(filePath);