ChartPoint.GetOnCategoryAxisPointYPx

ChartPoint.GetOnCategoryAxisPointYPx method

Gets y-coordinate of the point on category axis after calls Chart.Calculate() method. Only applies to Area chart.

public float GetOnCategoryAxisPointYPx(int index)

Remarks

Area 2D chart: index is 0. Area 3D chart: index is 0 or 1.

Examples

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

    public class ChartPointMethodGetOnCategoryAxisPointYPxWithInt32Demo
    {
        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 a chart
            int chartIndex = worksheet.Charts.Add(ChartType.Area, 5, 0, 20, 10);
            Chart chart = worksheet.Charts[chartIndex];

            // Set chart data source
            chart.NSeries.Add("B2:B4", true);
            chart.NSeries.CategoryData = "A2:A4";

            // Calculate chart to ensure all position properties are calculated
            chart.Calculate();

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

            try
            {
                // Call GetOnCategoryAxisPointYPx with index 0
                float yPx = point.GetOnCategoryAxisPointYPx(0);
                
                // Display the result
                Console.WriteLine($"Y coordinate of point on category axis: {yPx} pixels");
                
                // Save the workbook
                workbook.Save("ChartPointGetOnCategoryAxisPointYPxDemo.xlsx");
            }
            catch (Exception ex)
            {
                Console.WriteLine($"Error executing GetOnCategoryAxisPointYPx method: {ex.Message}");
            }
        }
    }
}

See Also