Skapa cirkeldiagram med ledarlinjer
Skapa cirkeldiagram med ledarlinjer
För att demonstrera användningen av Aspose.Cells for Java API för att skapa ett cirkeldiagram med ledarlinjer kommer vi först att skapa en ny Workbook och ange lite data som kommer att fungera som datorkälla för serier. När datan är på plats kommer vi att lägga till en Chart av typ Pie till diagramkollectionen och ställa in dess olika aspekter för att få önskad diagramvy.
// 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"); | |
Följande cirkeldiagram