Manage DataLabels of Excel Charts with C++

DataLabels are an important part of a chart. We can easily know the value, percentage, etc. of each series.

DataLabels Options

Aspose.Cells also allows managing chart’s datalabels at runtime with the DataLabels object. It’s simple to move, update, and format datalabels of the chart.

| todo:image_alt_text |

Manage the DataLabels of Chart

It’s simple to manage datalabels of the chart with Aspose.Cells DataLabels.

The following code snippet demonstrates how to manage DataLabels:

#include <iostream>
#include "Aspose.Cells.h"
using namespace Aspose::Cells;
using namespace Aspose::Cells::Charts;

int main()
{
    Aspose::Cells::Startup();

    // Instantiating a Workbook object
    Workbook workbook;

    // Adding a new worksheet to the Workbook object
    int sheetIndex = workbook.GetWorksheets().Add();

    // Obtaining the reference of the newly added worksheet by passing its sheet index
    Worksheet worksheet = workbook.GetWorksheets().Get(sheetIndex);

    // Adding sample values to cells
    worksheet.GetCells().Get(u"A1").PutValue(50);
    worksheet.GetCells().Get(u"A2").PutValue(100);
    worksheet.GetCells().Get(u"A3").PutValue(150);
    worksheet.GetCells().Get(u"B1").PutValue(60);
    worksheet.GetCells().Get(u"B2").PutValue(32);
    worksheet.GetCells().Get(u"B3").PutValue(50);

    // Adding a chart to the worksheet
    int chartIndex = worksheet.GetCharts().Add(ChartType::Column, 5, 0, 15, 5);

    // Accessing the instance of the newly added chart
    Chart chart = worksheet.GetCharts().Get(chartIndex);

    // Adding SeriesCollection (chart data source) to the chart ranging from "A1" cell to "B3"
    chart.GetNSeries().Add(u"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(LabelPositionType::Center);

    // Save the file
    workbook.Save(u"chart_datalabels.xlsx");

    Aspose::Cells::Cleanup();
}

Advance Topics

Chart to PDF with C++ Shapes in Charts with C++