Example: Line Chart

using Imsl.Chart2D;
using System;
using System.Windows.Forms;

public class LineEx1 : FrameChart 
{

    public LineEx1() 
    {
        Chart chart = this.Chart;

        AxisXY axis = new AxisXY(chart);
        
        int npoints = 20;
        double dx = .5 * System.Math.PI / (npoints - 1);
        double[] x = new double[npoints];
        double[] y1 = new double[npoints];
        double[] y2 = new double[npoints];
        double[] y3 = new double[npoints];
        
        //    Generate some data
        for (int i = 0; i < npoints; i++)
        {
            x[i] = i * dx;
            y1[i] = System.Math.Sin(x[i]);
            y2[i] = System.Math.Cos(x[i]);
            y3[i] = System.Math.Atan(x[i]);
        }
        Data d1 = new Data(axis, x, y1);
        Data d2 = new Data(axis, x, y2);
        Data d3 = new Data(axis, x, y3);
        
        //    Set Data Type to Line
        axis.DataType = Imsl.Chart2D.AxisXY.DATA_TYPE_LINE;
        
        //    Set Line Colors
        d1.LineColor = System.Drawing.Color.Red;
        d2.LineColor = System.Drawing.Color.Black;
        d3.LineColor = System.Drawing.Color.Blue;
        
        //    Set Data Labels
        d1.SetTitle("Sine");
        d2.SetTitle("Cosine");
        d3.SetTitle("ArcTangent");
        
        //    Add a Legend
        Legend legend = chart.Legend;
        legend.SetTitle(new Text("Legend"));
        legend.IsVisible = true;

        // Add an Annotation
        Text label = new Text("Maximum Values");
        label.Alignment = Axis.TEXT_X_RIGHT;
        Annotation ann = new Annotation(axis, label, 1.6, 1.02);
        ann.TextColor = System.Drawing.Color.DarkGray;
        
        //    Set the Chart Title
        chart.ChartTitle.SetTitle("Line Plots");
    
    }

    public static void Main(string[] argv) 
    {
        System.Windows.Forms.Application.Run(new LineEx1());
    }
}

Output

Link to C# source.