Bitmap img=new Bitmap(100,100) ;
        Graphics g = Graphics.FromImage(img);
        PointF[] points = new PointF[100];
        for (int i = 0; i < 100; i++)
        {
            points[i].X = i;
            points[i].Y =(float) trace[i, 0];
            g.DrawBeziers(new Pen(Color.Blue), points);
        }
        String layerFiename = @"f:\\test.bmp";
        img.Save(layerFiename);
        g.Dispose();