Series.TrendLines

Series.TrendLines property

Returns all the trendlines of this series.

public TrendlineCollection TrendLines { get; }

Examples

using System;
using Aspose.Cells;
using Aspose.Cells.Charts;

namespace AsposeCellsExamples
{
    public class SeriesPropertyTrendLinesDemo
    {
        public static void Run()
        {
            // Create a new workbook
            Workbook workbook = new Workbook();
            Worksheet sheet = workbook.Worksheets[0];

            // Add sample data
            sheet.Cells["A1"].PutValue("X");
            sheet.Cells["A2"].PutValue(1);
            sheet.Cells["A3"].PutValue(2);
            sheet.Cells["A4"].PutValue(3);
            sheet.Cells["A5"].PutValue(4);
            
            sheet.Cells["B1"].PutValue("Y");
            sheet.Cells["B2"].PutValue(2);
            sheet.Cells["B3"].PutValue(4);
            sheet.Cells["B4"].PutValue(8);
            sheet.Cells["B5"].PutValue(16);

            // Add a chart
            int chartIndex = sheet.Charts.Add(ChartType.Line, 5, 0, 20, 8);
            Chart chart = sheet.Charts[chartIndex];

            // Set chart data source
            chart.NSeries.Add("B2:B5", true);
            chart.NSeries.CategoryData = "A2:A5";

            // Add exponential trendline to the first series and get it by index
            int trendlineIndex = chart.NSeries[0].TrendLines.Add(TrendlineType.Exponential);
            Trendline trendline = chart.NSeries[0].TrendLines[trendlineIndex];
            trendline.DisplayEquation = true;
            trendline.DisplayRSquared = true;

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

See Also