ChartPoint.DoughnutInnerRadius

ChartPoint.DoughnutInnerRadius property

Gets the inner radius of doughnut slice in units of pixels after calls Chart.Calculate() method. Applies to Doughnut chart.

public int DoughnutInnerRadius { get; }

Examples

namespace AsposeCellsExamples
{
    using Aspose.Cells;
    using Aspose.Cells.Charts;
    using System;

    public class ChartPointPropertyDoughnutInnerRadiusDemo
    {
        public static void Run()
        {
            // Create a new workbook
            Workbook workbook = new Workbook();
            Worksheet worksheet = workbook.Worksheets[0];

            // Add sample data for the chart
            worksheet.Cells["A1"].PutValue("Category");
            worksheet.Cells["A2"].PutValue("C1");
            worksheet.Cells["A3"].PutValue("C2");
            worksheet.Cells["A4"].PutValue("C3");
            worksheet.Cells["B1"].PutValue("Value");
            worksheet.Cells["B2"].PutValue(4);
            worksheet.Cells["B3"].PutValue(3);
            worksheet.Cells["B4"].PutValue(5);

            // Add a doughnut chart
            int chartIndex = worksheet.Charts.Add(ChartType.Doughnut, 5, 0, 20, 8);
            Chart chart = worksheet.Charts[chartIndex];
            
            // Set chart data range
            chart.NSeries.Add("B2:B4", true);
            chart.NSeries.CategoryData = "A2:A4";

            // Calculate the chart to get the chart points
            chart.Calculate();

            // Get the first chart point from the first series
            ChartPoint point = chart.NSeries[0].Points[0];

            // Display the current DoughnutInnerRadius value
            Console.WriteLine("Current DoughnutInnerRadius value: " + point.DoughnutInnerRadius);

            // Note: DoughnutInnerRadius is read-only, so we can't set it directly
            // To change the inner radius, we need to adjust the HoleSize property of the chart
            chart.FirstSliceAngle = 30; // Adjust the first slice angle instead since HoleSize isn't available

            // Recalculate the chart to update the DoughnutInnerRadius
            chart.Calculate();

            // Display the updated DoughnutInnerRadius value
            Console.WriteLine("Updated DoughnutInnerRadius value: " + point.DoughnutInnerRadius);

            // Save the workbook
            workbook.Save("DoughnutInnerRadiusDemo.xlsx");
        }
    }
}

See Also