C++ kullanarak Grafikteki Serideki Veri Noktalarına Özel Etiketler Ekleme

Grafikteki seri veri noktalarına özel etiketler ekleyebilirsiniz. Aspose.Cells, bu özel etiketleri ekmek için DataLabel::getText() metodunu sağlar. Bu makale, bu yöntemi kullanarak seri veri noktalarına özel etiketler ekmeyi açıklayacaktır.

Aşağıdaki kod, Veri İşaretçileri Olan Çizgiyle Bağlantılı Dağılım Grafiği oluşturur ve ardından Özel Etiketler ekler Grafik‘in Serisindeki Veri Noktalarına. Her özel etiket, Seri Adı ve Nokta Adı‘nı gösterir. İstediğiniz takdirde bunun yerine başka metin kullanabilirsiniz.

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

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

    // Output directory path
    U16String outDir(u"..\\Data\\02_OutputDirectory\\");
    U16String outputPath = outDir + u"output_out.xlsx";

    // Create workbook with XLSX format
    Workbook workbook(FileFormatType::Xlsx);
    Worksheet sheet = workbook.GetWorksheets().Get(0);

    // Populate data cells
    sheet.GetCells().Get(0, 0).PutValue(1);
    sheet.GetCells().Get(0, 1).PutValue(2);
    sheet.GetCells().Get(0, 2).PutValue(3);

    sheet.GetCells().Get(1, 0).PutValue(4);
    sheet.GetCells().Get(1, 1).PutValue(5);
    sheet.GetCells().Get(1, 2).PutValue(6);

    sheet.GetCells().Get(2, 0).PutValue(7);
    sheet.GetCells().Get(2, 1).PutValue(8);
    sheet.GetCells().Get(2, 2).PutValue(9);

    // Create scatter chart
    int32_t chartIndex = sheet.GetCharts().Add(ChartType::ScatterConnectedByLinesWithDataMarker, 5, 1, 24, 10);
    Chart chart = sheet.GetCharts().Get(chartIndex);

    // Configure chart titles
    chart.GetTitle().SetText(u"Test");
    chart.GetCategoryAxis().GetTitle().SetText(u"X-Axis");
    chart.GetValueAxis().GetTitle().SetText(u"Y-Axis");

    // Set category data range
    chart.GetNSeries().SetCategoryData(u"A1:C1");

    // Add first data series
    chart.GetNSeries().Add(u"A2:C2", false);
    Series series = chart.GetNSeries().Get(0);
    int32_t pointCount = series.GetPoints().GetCount();

    // Configure data labels for first series
    for (int32_t i = 0; i < pointCount; i++)
    {
        ChartPoint point = series.GetPoints().Get(i);
        std::wstringstream ws;
        ws << L"Series 1\nPoint " << i;
        U16String labelText(reinterpret_cast<const char16_t*>(ws.str().c_str()));
        point.GetDataLabels().SetText(labelText);
    }

    // Add second data series
    chart.GetNSeries().Add(u"A3:C3", false);
    series = chart.GetNSeries().Get(1);
    pointCount = series.GetPoints().GetCount();

    // Configure data labels for second series
    for (int32_t i = 0; i < pointCount; i++)
    {
        ChartPoint point = series.GetPoints().Get(i);
        std::wstringstream ws;
        ws << L"Series 2\nPoint " << i;
        U16String labelText(reinterpret_cast<const char16_t*>(ws.str().c_str()));
        point.GetDataLabels().SetText(labelText);
    }

    // Save workbook
    workbook.Save(outputPath, SaveFormat::Xlsx);
    std::cout << "Chart created successfully with data labels!" << std::endl;

    Aspose::Cells::Cleanup();
    return 0;
}

#include <Aspose.Cells.h>

using namespace Aspose::Cells;
using namespace Aspose::Cells::Charts;

void AddCustomLabels() {
    // Create workbook object
    Workbook workbook;

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

    // Add sample data
    worksheet.GetCells().Get(u"A1").PutValue(u"X");
    worksheet.GetCells().Get(u"A2").PutValue(1);
    worksheet.GetCells().Get(u"A3").PutValue(2);
    worksheet.GetCells().Get(u"A4").PutValue(3);
    worksheet.GetCells().Get(u"B1").PutValue(u"Y");
    worksheet.GetCells().Get(u"B2").PutValue(4);
    worksheet.GetCells().Get(u"B3").PutValue(3);
    worksheet.GetCells().Get(u"B4").PutValue(2);
    worksheet.GetCells().Get(u"C1").PutValue(u"Point Name");
    worksheet.GetCells().Get(u"C2").PutValue(u"Point A");
    worksheet.GetCells().Get(u"C3").PutValue(u"Point B");
    worksheet.GetCells().Get(u"C4").PutValue(u"Point C");

    // Add chart
    int chartIndex = worksheet.GetCharts().Add(ChartType::ScatterConnectedByLinesWithDataMarker, 5, 0, 20, 8);
    Chart chart = worksheet.GetCharts().Get(chartIndex);

    // Set data source
    chart.GetNSeries().Add(u"=Sheet1!$B$2:$B$4", true);
    chart.GetNSeries().Get(0).SetXValues(u"=Sheet1!$A$2:$A$4");

    // Enable data labels
    DataLabels dataLabels = chart.GetNSeries().Get(0).GetDataLabels();
    dataLabels.SetShowValue(true);

    // Add custom labels
    int pointCount = chart.GetNSeries().Get(0).GetPoints().GetCount();
    for (int i = 0; i < pointCount; i++) {
        ChartPoint point = chart.GetNSeries().Get(0).GetPoints().Get(i);
        DataLabels dataLabel = point.GetDataLabels();
        dataLabel.SetText(
            u"Series: " + chart.GetNSeries().Get(0).GetName() + 
            u"\nPoint: " + worksheet.GetCells().Get(i + 1, 2).GetStringValue()
        );
    }

    // Save workbook
    workbook.Save(u"output.xlsx");
}