Creación de un gráfico circular con líneas guía
Crear gráficos circulares con líneas de líder
Para demostrar el uso del API Aspose.Cells for Java para crear un gráfico circular con líneas de líder, primero crearemos un nuevo Workbook e ingresaremos algunos datos que servirán como origen de datos de la serie. Una vez que los datos estén en su lugar, agregaremos un Chart de tipo Pie a la colección de gráficos y configuraremos sus diferentes aspectos para obtener la vista de gráfico deseada.
// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-Java | |
// The path to the documents directory. | |
String dataDir = Utils.getDataDir(CreatePieChartWithLeaderLines.class); | |
// Create an instance of Workbook in XLSX format | |
Workbook workbook = new Workbook(FileFormatType.XLSX); | |
// Access the first worksheet | |
Worksheet worksheet = workbook.getWorksheets().get(0); | |
// Add two columns of data | |
worksheet.getCells().get("A1").putValue("Retail"); | |
worksheet.getCells().get("A2").putValue("Services"); | |
worksheet.getCells().get("A3").putValue("Info & Communication"); | |
worksheet.getCells().get("A4").putValue("Transport Equip"); | |
worksheet.getCells().get("A5").putValue("Construction"); | |
worksheet.getCells().get("A6").putValue("Other Products"); | |
worksheet.getCells().get("A7").putValue("Wholesale"); | |
worksheet.getCells().get("A8").putValue("Land Transport"); | |
worksheet.getCells().get("A9").putValue("Air Transport"); | |
worksheet.getCells().get("A10").putValue("Electric Appliances"); | |
worksheet.getCells().get("A11").putValue("Securities"); | |
worksheet.getCells().get("A12").putValue("Textiles & Apparel"); | |
worksheet.getCells().get("A13").putValue("Machinery"); | |
worksheet.getCells().get("A14").putValue("Metal Products"); | |
worksheet.getCells().get("A15").putValue("Cash"); | |
worksheet.getCells().get("A16").putValue("Banks"); | |
worksheet.getCells().get("B1").putValue(10.4); | |
worksheet.getCells().get("B2").putValue(5.2); | |
worksheet.getCells().get("B3").putValue(6.4); | |
worksheet.getCells().get("B4").putValue(10.4); | |
worksheet.getCells().get("B5").putValue(7.9); | |
worksheet.getCells().get("B6").putValue(4.1); | |
worksheet.getCells().get("B7").putValue(3.5); | |
worksheet.getCells().get("B8").putValue(5.7); | |
worksheet.getCells().get("B9").putValue(3); | |
worksheet.getCells().get("B10").putValue(14.7); | |
worksheet.getCells().get("B11").putValue(3.6); | |
worksheet.getCells().get("B12").putValue(2.8); | |
worksheet.getCells().get("B13").putValue(7.8); | |
worksheet.getCells().get("B14").putValue(2.4); | |
worksheet.getCells().get("B15").putValue(1.8); | |
worksheet.getCells().get("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("B1:B16", true); | |
// Set category data range | |
chart.getNSeries().setCategoryData("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.OUTSIDE_END); | |
// Set separator | |
dataLabels.setSeparator(DataLablesSeparatorType.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); | |
} | |
//In order to save the chart image, create an instance of ImageOrPrintOptions | |
ImageOrPrintOptions anOption = new ImageOrPrintOptions(); | |
//Set image format | |
anOption.setImageFormat(ImageFormat.getPng()); | |
//Set resolution | |
anOption.setHorizontalResolution(200); | |
anOption.setVerticalResolution(200); | |
//Render chart to image | |
chart.toImage(dataDir + "output.png", anOption); | |
//Save the workbook to see chart inside the Excel | |
workbook.save(dataDir + "output.xlsx"); | |
Gráfico Circular Resultante