Creando un gráfico circular con líneas de líder con C++
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Este artículo explica cómo crear un gráfico circular con líneas de líder desde cero usando la API Aspose.Cells for C++. En Excel, la opción ‘Mostrar líneas de líder’ está activada por defecto, por lo que al crear un gráfico circular en Excel, se muestran las líneas de líder. Sin embargo, al crear un gráfico similar con las API Aspose.Cells, debes establecer explícitamente la propiedad Series.GetHasLeaderLines().
Para demostrar cómo usar la API Aspose.Cells for C++ para crear un gráfico circular con líneas de líder, primero crearemos un nuevo Workbook e ingresaremos algunos datos que servirán como fuente de datos de la serie. Una vez que los datos estén en su lugar, agregaremos un Chart de tipo ChartType.Pie a la colección de gráficos y configuraremos sus diferentes aspectos para obtener la vista de gráfico deseada.
#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();
}
Hasta el momento hemos creado un gráfico circular y configurado sus diferentes aspectos. Ahora vamos a activar las líneas guía para el gráfico. Ten en cuenta que para mostrar las líneas guía, debemos mover un poco las etiquetas de datos.
El siguiente fragmento de código activa las líneas guía, actualiza el gráfico y luego calcula las posiciones de las etiquetas de datos para moverlas en consecuencia.
#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();
}
Finalmente, el siguiente código guarda el gráfico en formato de imagen y el libro de trabajo en formato XLSX.
#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();
}
| Gráfico de Pastel Resultante |
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Temas avanzados
- Personalizar Colores de Sector en Gráfico de Pastel
- Encontrar si los Puntos de Datos están en el Segundo Pastel o Barra en un Gráfico de Pastel de Pastel o de Barra de Pastel