Skapa cirkeldiagram med ledarlinjer

Den här artikeln förklarar hur du skapar ett cirkeldiagram med ledarlinjer från början medan du använder Aspose.Cells for .NET API. I Excel är alternativet “Visa ledarlinjer” inställt som standard så när du skapar ett cirkeldiagram i Excel visas ledarlinjerna. Men när du skapar ett liknande diagram med Aspose.Cells API:er måste du uttryckligen ställa inSeries.HasLeaderLines fast egendom.

För att demonstrera användningen av Aspose.Cells for .NET API för att skapa ett cirkeldiagram med ledarlinjer, kommer vi först att skapa ett nyttArbetsbok och mata in några data som kommer att fungera som seriedatakällan. När uppgifterna är på plats kommer vi att lägga till enDiagram av typChartType.Pietill samlingen av sjökort och ställ in dess olika aspekter för att få önskad sjökortsvy.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

// Create an instance of Workbook in XLSX format
Workbook workbook = new Workbook(FileFormatType.Xlsx);

// Access the first worksheet
Worksheet worksheet = workbook.Worksheets[0];

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

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

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

// Access newly created Chart instance
Chart chart = worksheet.Charts[id];

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

// Set category data range
chart.NSeries.CategoryData = "A1:A16";

// Turn off legend
chart.ShowLegend = false;

// Access data labels
DataLabels dataLabels = chart.NSeries[0].DataLabels;

// Turn on category names
dataLabels.ShowCategoryName = true;

// Turn on percentage format
dataLabels.ShowPercentage = true;

// Set position
dataLabels.Position = LabelPositionType.OutsideEnd;

// Set separator
dataLabels.SeparatorType = DataLabelsSeparatorType.Comma;

Hittills har vi skapat ett cirkeldiagram och angett dess olika aspekter. Nu ska vi slå på ledarlinjerna för diagrammet. Observera att för att visa ledarlinjerna måste vi flytta dataetiketterna lite.

Följande kodbit aktiverar ledarlinjerna, uppdaterar diagrammet och beräknar sedan dataetiketternas positioner för att flytta dem därefter.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// Create an instance of Workbook in XLSX format
Workbook workbook = new Workbook(FileFormatType.Xlsx);

// Access the first worksheet
Worksheet worksheet = workbook.Worksheets[0];

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

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

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

// Access newly created Chart instance
Chart chart = worksheet.Charts[id];

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

// Set category data range
chart.NSeries.CategoryData = "A1:A16";

// Turn off legend
chart.ShowLegend = false;

// Access data labels
DataLabels dataLabels = chart.NSeries[0].DataLabels;

// Turn on category names
dataLabels.ShowCategoryName = true;

// Turn on percentage format
dataLabels.ShowPercentage = true;

// Set position
dataLabels.Position = LabelPositionType.OutsideEnd;

// Set separator
dataLabels.SeparatorType = DataLabelsSeparatorType.Comma;

// Turn on leader lines
chart.NSeries[0].HasLeaderLines = true;

// Calculete 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.NSeries[0].Points.Count; i++)
{
    int X = chart.NSeries[0].Points[i].DataLabels.X;
    // 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.NSeries[0].Points[i].DataLabels.X = X + DELTA;
    else
        chart.NSeries[0].Points[i].DataLabels.X = X - DELTA;
}

Slutligen sparar följande kod diagrammet i bildformat och arbetsboken i XLSX-format.

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
// Create an instance of Workbook in XLSX format
Workbook workbook = new Workbook(FileFormatType.Xlsx);

// Access the first worksheet
Worksheet worksheet = workbook.Worksheets[0];

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

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

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

// Access newly created Chart instance
Chart chart = worksheet.Charts[id];

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

// Set category data range
chart.NSeries.CategoryData = "A1:A16";

// Turn off legend
chart.ShowLegend = false;

// Access data labels
DataLabels dataLabels = chart.NSeries[0].DataLabels;

// Turn on category names
dataLabels.ShowCategoryName = true;

// Turn on percentage format
dataLabels.ShowPercentage = true;

// Set position
dataLabels.Position = LabelPositionType.OutsideEnd;

// Set separator
dataLabels.SeparatorType = DataLabelsSeparatorType.Comma;

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

// Set image format
anOption.ImageType = Drawing.ImageType.Png;

// Set resolution
anOption.HorizontalResolution = 200;
anOption.VerticalResolution = 200;

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

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

Resulterande cirkeldiagram

Förhandsämnen

• Anpassade segment- eller sektorfärger i cirkeldiagram
• Ta reda på om datapoäng finns i den andra cirkeln eller stapeln på ett cirkel- eller cirkeldiagram

relaterade artiklar

• Skapa diagram
• Anpassa diagram
• Dataformatering i diagram
• Ställa in diagrammets utseende