C++ ile Lider Çizgileri ile Pasta Grafiği Oluşturma

Bu makale, Aspose.Cells for C++ API’sini kullanarak sıfırdan lider çizgili pasta grafiği oluşturmayı açıklamaktadır. Excel’de ‘Lider çizgilerini göster’ seçeneği varsayılan olarak ayarlanmıştır, bu nedenle Excel’de pasta grafiği oluşturduğunuzda lider çizgileri görünür. Ancak, Aspose.Cells API’leri ile benzer bir grafik oluştururken, Series.GetHasLeaderLines() özelliğini açıkça ayarlamanız gerekir.

Aspose.Cells for C++ API’sini kullanarak lider çizgileriyle pasta grafiği oluşturmak için kullanımını göstermek amacıyla ilk olarak yeni bir Workbook oluşturacağız ve veri kaynağı olacak bazı veriler gireceğiz. Veri yerleştirildikten sonra, koleksiyona bir Chart ekleyeceğiz ve farklı yönlerini ayarlayarak istediğiniz grafik görünümünü elde edeceğiz.

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

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

    // Source directory path
    U16String srcDir(u"..\\Data\\01_SourceDirectory\\");

    // Output directory path
    U16String outDir(u"..\\Data\\02_OutputDirectory\\");

    // Create an instance of Workbook in XLSX format
    Workbook workbook(FileFormatType::Xlsx);

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

    // Add two columns of data
    worksheet.GetCells().Get(u"A1").PutValue(u"Retail");
    worksheet.GetCells().Get(u"A2").PutValue(u"Services");
    worksheet.GetCells().Get(u"A3").PutValue(u"Info & Communication");
    worksheet.GetCells().Get(u"A4").PutValue(u"Transport Equip");
    worksheet.GetCells().Get(u"A5").PutValue(u"Construction");
    worksheet.GetCells().Get(u"A6").PutValue(u"Other Products");
    worksheet.GetCells().Get(u"A7").PutValue(u"Wholesale");
    worksheet.GetCells().Get(u"A8").PutValue(u"Land Transport");
    worksheet.GetCells().Get(u"A9").PutValue(u"Air Transport");
    worksheet.GetCells().Get(u"A10").PutValue(u"Electric Appliances");
    worksheet.GetCells().Get(u"A11").PutValue(u"Securities");
    worksheet.GetCells().Get(u"A12").PutValue(u"Textiles & Apparel");
    worksheet.GetCells().Get(u"A13").PutValue(u"Machinery");
    worksheet.GetCells().Get(u"A14").PutValue(u"Metal Products");
    worksheet.GetCells().Get(u"A15").PutValue(u"Cash");
    worksheet.GetCells().Get(u"A16").PutValue(u"Banks");

    worksheet.GetCells().Get(u"B1").PutValue(10.4);
    worksheet.GetCells().Get(u"B2").PutValue(5.2);
    worksheet.GetCells().Get(u"B3").PutValue(6.4);
    worksheet.GetCells().Get(u"B4").PutValue(10.4);
    worksheet.GetCells().Get(u"B5").PutValue(7.9);
    worksheet.GetCells().Get(u"B6").PutValue(4.1);
    worksheet.GetCells().Get(u"B7").PutValue(3.5);
    worksheet.GetCells().Get(u"B8").PutValue(5.7);
    worksheet.GetCells().Get(u"B9").PutValue(3);
    worksheet.GetCells().Get(u"B10").PutValue(14.7);
    worksheet.GetCells().Get(u"B11").PutValue(3.6);
    worksheet.GetCells().Get(u"B12").PutValue(2.8);
    worksheet.GetCells().Get(u"B13").PutValue(7.8);
    worksheet.GetCells().Get(u"B14").PutValue(2.4);
    worksheet.GetCells().Get(u"B15").PutValue(1.8);
    worksheet.GetCells().Get(u"B16").PutValue(10.1);

    // Create a pie chart and add it to the collection of charts
    int id = worksheet.GetCharts().Add(ChartType::Pie, 3, 3, 23, 13);

    // Access newly created Chart instance
    Chart chart = worksheet.GetCharts().Get(id);

    // Set series data range
    chart.GetNSeries().Add(u"B1:B16", true);

    // Set category data range
    chart.GetNSeries().SetCategoryData(u"A1:A16");

    // Turn off legend
    chart.SetShowLegend(false);

    // Access data labels
    DataLabels dataLabels = chart.GetNSeries().Get(0).GetDataLabels();

    // Turn on category names
    dataLabels.SetShowCategoryName(true);

    // Turn on percentage format
    dataLabels.SetShowPercentage(true);

    // Set position
    dataLabels.SetPosition(LabelPositionType::OutsideEnd);

    // Set separator
    dataLabels.SetSeparatorType(DataLabelsSeparatorType::Comma);

    // Save the workbook
    workbook.Save(outDir + u"PieChart_out.xlsx");

    std::cout << "Pie chart created successfully!" << std::endl;

    Aspose::Cells::Cleanup();
}

Şimdiye kadar bir pasta grafiği oluşturduk ve farklı yönlerini ayarladık. Şimdi grafiğin lider çizgilerini açmaya hazırlanıyoruz. Lütfen unutmayın, lider çizgileri göstermek için veri etiketlerini biraz hareket ettirmemiz gerekiyor.

Aşağıdaki kod parçası lider çizgileri açar, grafiği yeniler ve ardından veri etiketlerinin konumlarını uygun şekilde hareket ettirir.

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

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

    // Create an instance of Workbook in XLSX format
    Workbook workbook(FileFormatType::Xlsx);

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

    // Add two columns of data
    worksheet.GetCells().Get(u"A1").PutValue(u"Retail");
    worksheet.GetCells().Get(u"A2").PutValue(u"Services");
    worksheet.GetCells().Get(u"A3").PutValue(u"Info & Communication");
    worksheet.GetCells().Get(u"A4").PutValue(u"Transport Equip");
    worksheet.GetCells().Get(u"A5").PutValue(u"Construction");
    worksheet.GetCells().Get(u"A6").PutValue(u"Other Products");
    worksheet.GetCells().Get(u"A7").PutValue(u"Wholesale");
    worksheet.GetCells().Get(u"A8").PutValue(u"Land Transport");
    worksheet.GetCells().Get(u"A9").PutValue(u"Air Transport");
    worksheet.GetCells().Get(u"A10").PutValue(u"Electric Appliances");
    worksheet.GetCells().Get(u"A11").PutValue(u"Securities");
    worksheet.GetCells().Get(u"A12").PutValue(u"Textiles & Apparel");
    worksheet.GetCells().Get(u"A13").PutValue(u"Machinery");
    worksheet.GetCells().Get(u"A14").PutValue(u"Metal Products");
    worksheet.GetCells().Get(u"A15").PutValue(u"Cash");
    worksheet.GetCells().Get(u"A16").PutValue(u"Banks");

    worksheet.GetCells().Get(u"B1").PutValue(10.4);
    worksheet.GetCells().Get(u"B2").PutValue(5.2);
    worksheet.GetCells().Get(u"B3").PutValue(6.4);
    worksheet.GetCells().Get(u"B4").PutValue(10.4);
    worksheet.GetCells().Get(u"B5").PutValue(7.9);
    worksheet.GetCells().Get(u"B6").PutValue(4.1);
    worksheet.GetCells().Get(u"B7").PutValue(3.5);
    worksheet.GetCells().Get(u"B8").PutValue(5.7);
    worksheet.GetCells().Get(u"B9").PutValue(3);
    worksheet.GetCells().Get(u"B10").PutValue(14.7);
    worksheet.GetCells().Get(u"B11").PutValue(3.6);
    worksheet.GetCells().Get(u"B12").PutValue(2.8);
    worksheet.GetCells().Get(u"B13").PutValue(7.8);
    worksheet.GetCells().Get(u"B14").PutValue(2.4);
    worksheet.GetCells().Get(u"B15").PutValue(1.8);
    worksheet.GetCells().Get(u"B16").PutValue(10.1);

    // Create a pie chart and add it to the collection of charts
    int id = worksheet.GetCharts().Add(ChartType::Pie, 3, 3, 23, 13);

    // Access newly created Chart instance
    Chart chart = worksheet.GetCharts().Get(id);

    // Set series data range
    chart.GetNSeries().Add(u"B1:B16", true);

    // Set category data range
    chart.GetNSeries().SetCategoryData(u"A1:A16");

    // Turn off legend
    chart.SetShowLegend(false);

    // Access data labels
    DataLabels dataLabels = chart.GetNSeries().Get(0).GetDataLabels();

    // Turn on category names
    dataLabels.SetShowCategoryName(true);

    // Turn on percentage format
    dataLabels.SetShowPercentage(true);

    // Set position
    dataLabels.SetPosition(LabelPositionType::OutsideEnd);

    // Set separator
    dataLabels.SetSeparatorType(DataLabelsSeparatorType::Comma);

    // Turn on leader lines
    chart.GetNSeries().Get(0).SetHasLeaderLines(true);

    // Calculate chart
    chart.Calculate();

    // You need to move DataLabels a little leftward or rightward depending on their position to show leader lines
    int DELTA = 100;
    for (int i = 0; i < chart.GetNSeries().Get(0).GetPoints().GetCount(); i++)
    {
        int X = chart.GetNSeries().Get(0).GetPoints().Get(i).GetDataLabels().GetX();
        // If it is greater than 2000, then move the X position a little right otherwise move the X position a little left
        if (X > 2000)
            chart.GetNSeries().Get(0).GetPoints().Get(i).GetDataLabels().SetX(X + DELTA);
        else
            chart.GetNSeries().Get(0).GetPoints().Get(i).GetDataLabels().SetX(X - DELTA);
    }

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

    Aspose::Cells::Cleanup();
}

Son olarak, aşağıdaki kod çizgiyi görüntü formatında ve çalışma kitabını XLSX formatında kaydeder.

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

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

    // Create an instance of Workbook in XLSX format
    Workbook workbook(FileFormatType::Xlsx);

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

    // Add two columns of data
    worksheet.GetCells().Get(u"A1").PutValue(u"Retail");
    worksheet.GetCells().Get(u"A2").PutValue(u"Services");
    worksheet.GetCells().Get(u"A3").PutValue(u"Info & Communication");
    worksheet.GetCells().Get(u"A4").PutValue(u"Transport Equip");
    worksheet.GetCells().Get(u"A5").PutValue(u"Construction");
    worksheet.GetCells().Get(u"A6").PutValue(u"Other Products");
    worksheet.GetCells().Get(u"A7").PutValue(u"Wholesale");
    worksheet.GetCells().Get(u"A8").PutValue(u"Land Transport");
    worksheet.GetCells().Get(u"A9").PutValue(u"Air Transport");
    worksheet.GetCells().Get(u"A10").PutValue(u"Electric Appliances");
    worksheet.GetCells().Get(u"A11").PutValue(u"Securities");
    worksheet.GetCells().Get(u"A12").PutValue(u"Textiles & Apparel");
    worksheet.GetCells().Get(u"A13").PutValue(u"Machinery");
    worksheet.GetCells().Get(u"A14").PutValue(u"Metal Products");
    worksheet.GetCells().Get(u"A15").PutValue(u"Cash");
    worksheet.GetCells().Get(u"A16").PutValue(u"Banks");

    worksheet.GetCells().Get(u"B1").PutValue(10.4);
    worksheet.GetCells().Get(u"B2").PutValue(5.2);
    worksheet.GetCells().Get(u"B3").PutValue(6.4);
    worksheet.GetCells().Get(u"B4").PutValue(10.4);
    worksheet.GetCells().Get(u"B5").PutValue(7.9);
    worksheet.GetCells().Get(u"B6").PutValue(4.1);
    worksheet.GetCells().Get(u"B7").PutValue(3.5);
    worksheet.GetCells().Get(u"B8").PutValue(5.7);
    worksheet.GetCells().Get(u"B9").PutValue(3);
    worksheet.GetCells().Get(u"B10").PutValue(14.7);
    worksheet.GetCells().Get(u"B11").PutValue(3.6);
    worksheet.GetCells().Get(u"B12").PutValue(2.8);
    worksheet.GetCells().Get(u"B13").PutValue(7.8);
    worksheet.GetCells().Get(u"B14").PutValue(2.4);
    worksheet.GetCells().Get(u"B15").PutValue(1.8);
    worksheet.GetCells().Get(u"B16").PutValue(10.1);

    // Create a pie chart and add it to the collection of charts
    int id = worksheet.GetCharts().Add(ChartType::Pie, 3, 3, 23, 13);

    // Access newly created Chart instance
    Chart chart = worksheet.GetCharts().Get(id);

    // Set series data range
    chart.GetNSeries().Add(u"B1:B16", true);

    // Set category data range
    chart.GetNSeries().SetCategoryData(u"A1:A16");

    // Turn off legend
    chart.SetShowLegend(false);

    // Access data labels
    DataLabels dataLabels = chart.GetNSeries().Get(0).GetDataLabels();

    // Turn on category names
    dataLabels.SetShowCategoryName(true);

    // Turn on percentage format
    dataLabels.SetShowPercentage(true);

    // Set position
    dataLabels.SetPosition(LabelPositionType::OutsideEnd);

    // Set separator
    dataLabels.SetSeparatorType(DataLabelsSeparatorType::Comma);

    // In order to save the chart image, create an instance of ImageOrPrintOptions
    ImageOrPrintOptions anOption;

    // Set image format
    anOption.SetImageType(ImageType::Png);

    // Set resolution
    anOption.SetHorizontalResolution(200);
    anOption.SetVerticalResolution(200);

    // Render chart to image
    chart.ToImage(u"output_out.png", anOption);

    // Save the workbook to see chart inside the Excel
    workbook.Save(u"output_out.xlsx");

    Aspose::Cells::Cleanup();
}

Sonuçta Oluşan Pasta Grafiği

Gelişmiş Konular

• Pasta Grafiğinde Özel Dilim veya Sektör Renkleri
• Bir Pasta-grafik veya Çubuk-grafikte Veri Noktalarının İkinci Pasta’nın veya Pasta’nın Çubuğu’nun Üzerinde Olup Olmadığını Bulma

İlgili Makaleler

• Grafikler Oluşturma
• Grafikleri Özelleştirme
• Grafiklerde Veri Biçimlendirme
• Grafik Görünümünü Ayarlama