How to create TreeMap chart with C++

Possible Usage Scenarios

A treemap chart provides a hierarchical view of your data and makes it easy to spot patterns, such as which items are a store’s best sellers. The tree branches are represented by rectangles and each sub-branch is shown as a smaller rectangle. The treemap chart displays categories by color and proximity and can easily show lots of data which would be difficult with other chart types.

TreeMap chart

After running the code below, you will see the TreeMap chart as shown below.

Sample Code

The following sample code loads the sample Excel file and generates the output Excel file.

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

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

    // Create an instance of Workbook
    Workbook workbook(u"treemap.xlsx");

    // Access the first worksheet
    Worksheet worksheet = workbook.GetWorksheets().Get(0);

    // Add a Treemap chart
    int32_t pieIdx = worksheet.GetCharts().Add(ChartType::Treemap, 5, 6, 20, 12);

    // Retrieve the Chart object
    Chart chart = worksheet.GetCharts().Get(pieIdx);

    // Set the legend can be showed
    chart.SetShowLegend(true);

    // Set the chart title name 
    chart.GetTitle().SetText(u"TreeMap Chart");

    // Add series data range (D2:F13, actually)
    chart.GetNSeries().Add(u"D2:F13", true);

    // Set category data (A2:C13 is incorrect)
    chart.GetNSeries().SetCategoryData(u"A2:C13");

    // Show the DataLabels with category names
    chart.GetNSeries().Get(0).GetDataLabels().SetShowCategoryName(true);

    // Fill the PlotArea area with nothing 
    chart.GetPlotArea().GetArea().GetFillFormat().SetFillType(FillType::None);

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

    Aspose::Cells::Cleanup();
}