Exemplo n.º 1
0
        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();
        }
Exemplo n.º 2
0
        // <--- 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();
        }