ChartPoint.GetOnCategoryAxisPointCount

ChartPoint.GetOnCategoryAxisPointCount method

Gets the number of the points on category axis after calls Chart.Calculate() method. Only applies to area chart.

public int GetOnCategoryAxisPointCount()

Remarks

Area 2D chart return 1 Area 3D chart return 2.

Examples

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

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

            // Add sample data for chart
            worksheet.Cells["A1"].PutValue("Category");
            worksheet.Cells["A2"].PutValue("A");
            worksheet.Cells["A3"].PutValue("B");
            worksheet.Cells["A4"].PutValue("C");
            worksheet.Cells["B1"].PutValue("Value");
            worksheet.Cells["B2"].PutValue(10);
            worksheet.Cells["B3"].PutValue(20);
            worksheet.Cells["B4"].PutValue(30);

            // Add an area chart
            int chartIndex = worksheet.Charts.Add(ChartType.Area, 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 chart to ensure all chart points are calculated
            chart.Calculate();

            try
            {
                // Get the first chart point from first series
                ChartPoint point = chart.NSeries[0].Points[0];
                
                // Call GetOnCategoryAxisPointCount method
                int pointCount = point.GetOnCategoryAxisPointCount();
                
                Console.WriteLine($"Number of points on category axis: {pointCount}");
                
                // Display coordinates of each point on category axis
                for (int i = 0; i < pointCount; i++)
                {
                    float x = point.GetOnCategoryAxisPointXPx(i);
                    float y = point.GetOnCategoryAxisPointYPx(i);
                    Console.WriteLine($"Point {i}: X={x}, Y={y}");
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error executing GetOnCategoryAxisPointCount method: {ex.Message}");
            }
            
            // Save the workbook
            workbook.Save("MethodGetOnCategoryAxisPointCountDemo.xlsx");
        }
    }
}

See Also