public MyTableOfFunction(double xo, double xn, int n, Func <double, double> f_x, string title)
{
Title = title; Fx = f_x;
Points = new Point_xf[n + 1];
Maximum = new Point_xf(double.NaN, double.MinValue);
Minimum = new Point_xf(double.NaN, double.MaxValue);
double hx = (xn - xo) / n, xi;
for (int i = 0; i <= n; i++)
{
xi = xo + hx * i; Points[i] = new Point_xf(xi, Fx(xi));
if (Maximum.F < Points[i].F)
{
Maximum = Points[i];
}
if (Minimum.F > Points[i].F)
{
Minimum = Points[i];
}
}
Roots_Location();
}
// <--- Constructor --->
public MyTableOfData(string path, string title)
{
List <Point_xf> Temp = new List <Point_xf>();
FileInfo file = new FileInfo(path);
Table_in_File = "\r\n Table " + title +
" in file " + file.Name + " :\r\n";
#region <---Read bin file in list of data--->
if (file.Extension == ".bin")
{
BinaryReader bin_rdr = new BinaryReader(file.OpenRead());
int i = -1;
try
{
while (true)
{
Temp.Add(new Point_xf(bin_rdr.ReadDouble(), bin_rdr.ReadDouble()));
i++;
Table_in_File += $"{i,4}" + Temp[i].ToPrint() + "\r\n";
}
}
catch (IOException) { }
bin_rdr.Close();
}
#endregion <---Read bin file in list of data--->
#region <---Read text file in the list of data--->
if (file.Extension == ".txt")
{
bool dot_or_comma = true; int i = -1;
if (CI.CurrentCulture.NumberFormat.CurrencyDecimalSeparator == ",")
{
dot_or_comma = false;
}
StreamReader txt_rdr = new StreamReader(file.OpenRead());
string[] txt; string line;
while (!txt_rdr.EndOfStream)
{
i++; line = txt_rdr.ReadLine();
if (dot_or_comma)
{
line = (line.Replace(",", ".")).Trim();
}
else
{
line = (line.Replace(".", ",")).Trim();
}
txt = line.Split(new char[] { ' ', ';' },
StringSplitOptions.RemoveEmptyEntries);
Temp.Add(new Point_xf(Convert.ToDouble(txt[0]), Convert.ToDouble(txt[1])));
Table_in_File += $"{i,4}" + Temp[i].ToPrint() + "\r\n";
}
txt_rdr.Close();
}
#endregion <---Read text file in the list of data--->
#region <---Data table generation--->
if (Temp != null)
{
Temp.Sort((point_i, point_j) => point_i.X.CompareTo(point_j.X));
Points = Temp.ToArray();
Minimum = new Point_xf(double.NaN, double.MaxValue);
Maximum = new Point_xf(double.NaN, double.MinValue);
for (int i = 0; i < Length; i++)
{
if (Minimum.F > Points[i].F)
{
Minimum = Points[i];
}
if (Maximum.F < Points[i].F)
{
Maximum = Points[i];
}
}
}
else
{
Points = null; Minimum = null; Maximum = null;
}
Title = title;
#endregion <---Data table generation--->
Roots_Location();
}