public static void Rotation()
{
List <ArmihoLine> Output = new List <ArmihoLine>();
for (int i = 0; i <= 20; i++)
{
epsila = i * 0.05;
var line = new ArmihoLine();
line.Iteration = epsila.ToString();
var min = ArmihoMovedown(0, 0);
var c = min.Count();
line.Lambda = c.ToString();
Output.Add(line);
}
string filename = "Rosenbrok_armiho_iterations";
using (StreamWriter writer = new StreamWriter(filename + ".csv"))
{
using (CsvWriter csvWriter = new CsvWriter(writer, System.Globalization.CultureInfo.CurrentCulture))
{
csvWriter.Configuration.Delimiter = ";";
csvWriter.WriteRecords(Output);
}
}
}
public static List <Tuple <double, double> > ArmihoMovedown(double x, double y)
{
int iteration = 0;
List <ArmihoLine> Output = new List <ArmihoLine>();
ArmihoLine header = new ArmihoLine();
header.Lambda = "Rosenbrok";
Output.Add(header);
List <Tuple <double, double> > Allpoints = new List <Tuple <double, double> >();
Allpoints.Add(new Tuple <double, double>(x, y));
double norm = 1;
Xtemp = Allpoints[iteration];
Gradtemp = AntiGradient(Xtemp.Item1, Xtemp.Item2);
ArmihoLine firstline = new ArmihoLine();
firstline.Iteration = iteration.ToString();
firstline.X1 = x.ToString();
firstline.X2 = y.ToString();
firstline.F_x = Function(x, y).ToString();
//firstline.dF_dX1 = Gradtemp.Item1.ToString();
//firstline.dF_dX2 = Gradtemp.Item2.ToString();
Output.Add(firstline);
do
{
ArmihoLine line = new ArmihoLine();
var alfa = CalcAlfaArmiho();
Allpoints.Add(new Tuple <double, double>(Allpoints[iteration].Item1 + alfa * Gradtemp.Item1, Allpoints[iteration].Item2 + alfa * Gradtemp.Item2));
iteration++;
//norm = Function(Allpoints[iteration].Item1, Allpoints[iteration].Item2) - Function(Allpoints[iteration-1].Item1, Allpoints[iteration - 1].Item2);
norm = Math.Sqrt(Math.Pow(Allpoints[iteration].Item1 - Allpoints[iteration - 1].Item1, 2)
+ Math.Pow(Allpoints[iteration].Item2 - Allpoints[iteration - 1].Item2, 2));
Xtemp = Allpoints[iteration];
Gradtemp = AntiGradient(Xtemp.Item1, Xtemp.Item2);
line.Iteration = iteration.ToString();
line.Lambda = alfa.ToString();
//line.deltaX1 = (alfa * Gradtemp.Item1).ToString();
//line.deltaX2 = (alfa * Gradtemp.Item2).ToString();
line.X1 = Xtemp.Item1.ToString();
line.X2 = Xtemp.Item2.ToString();
line.F_x = Function(Xtemp.Item1, Xtemp.Item2).ToString();
//line.dF_dX1 = Gradtemp.Item1.ToString();
//line.dF_dX2 = Gradtemp.Item2.ToString();
//line.norm_X = norm.ToString();
Output.Add(line);
} while (norm > delta);
ArmihoLine downheader = new ArmihoLine();
downheader.Lambda = "Extremum";
downheader.X1 = Xtemp.Item1.ToString();
downheader.X2 = Xtemp.Item2.ToString();
downheader.F_x = Function(Xtemp.Item1, Xtemp.Item2).ToString();
Output.Add(downheader);
string filename = "Prot_ellips11";
using (StreamWriter writer = new StreamWriter(filename + ".csv"))
{
using (CsvWriter csvWriter = new CsvWriter(writer, System.Globalization.CultureInfo.CurrentCulture))
{
csvWriter.Configuration.Delimiter = ";";
csvWriter.WriteRecords(Output);
}
}
return(Allpoints);
}
