source: branches/WebJobManager/HeuristicLab.Data/3.3/DoubleMatrix.cs @ 17687

#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System.Collections.Generic;
using System.Text;
using HeuristicLab.Common;
using HeuristicLab.Core;
using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
using System.Linq;

namespace HeuristicLab.Data {
  [Item("DoubleMatrix", "Represents a matrix of double values.")]
  [StorableClass]
  public class DoubleMatrix : ValueTypeMatrix<double>, IStringConvertibleMatrix {
    [StorableConstructor]
    protected DoubleMatrix(bool deserializing) : base(deserializing) { }
    protected DoubleMatrix(DoubleMatrix original, Cloner cloner)
      : base(original, cloner) {
    }
    public DoubleMatrix() : base() { }
    public DoubleMatrix(int rows, int columns) : base(rows, columns) { }
    public DoubleMatrix(int rows, int columns, IEnumerable<string> columnNames) : base(rows, columns, columnNames) { }
    public DoubleMatrix(int rows, int columns, IEnumerable<string> columnNames, IEnumerable<string> rowNames) : base(rows, columns, columnNames, rowNames) { }
    public DoubleMatrix(double[,] elements) : base(elements) { }
    public DoubleMatrix(double[,] elements, IEnumerable<string> columnNames) : base(elements, columnNames) { }
    public DoubleMatrix(double[,] elements, IEnumerable<string> columnNames, IEnumerable<string> rowNames) : base(elements, columnNames, rowNames) { }

    public override IDeepCloneable Clone(Cloner cloner) {
      return new DoubleMatrix(this, cloner);
    }
        public static DoubleMatrix Parse(string val)
        {
            try
            {
                
                val = val.Replace("]", string.Empty);
                
                string[] parts = val.Split('[');
                var r = parts.Length;
                var c = parts[1].Split(';').Length;
                val = val.Replace("\n", ";");
                val = val.Replace("[", string.Empty);
                string[] arr = System.Array.ConvertAll(val.Trim().Split(';'), p => p.Trim());
                double[] a = arr.Where(s => s != "").ToList().ConvertAll(s => double.Parse(s)).ToArray();
                double[,] b = new double[r,c];
                var rowcount = 0;
                for(int i = 0; i < a.Length;)
                {
                    for(int j = 0; j < c; j++)
                    {
                        b[rowcount, j] = a[i];
                        i++;
                    }
                    rowcount++;
                }
                return new DoubleMatrix(b);
            }
            catch (System.FormatException e)
            {
                return null;
            }
        }

        protected virtual bool Validate(string value, out string errorMessage) {
      double val;
      bool valid = double.TryParse(value, out val);
      errorMessage = string.Empty;
      if (!valid) {
        StringBuilder sb = new StringBuilder();
        sb.Append("Invalid Value (Valid Value Format: \"");
        sb.Append(FormatPatterns.GetDoubleFormatPattern());
        sb.Append("\")");
        errorMessage = sb.ToString();
      }
      return valid;
    }
    protected virtual string GetValue(int rowIndex, int columIndex) {
      return this[rowIndex, columIndex].ToString("r");
    }
    protected virtual bool SetValue(string value, int rowIndex, int columnIndex) {
      double val;
      if (double.TryParse(value, out val)) {
        this[rowIndex, columnIndex] = val;
        return true;
      } else {
        return false;
      }
    }

    #region IStringConvertibleMatrix Members
    int IStringConvertibleMatrix.Rows {
      get { return Rows; }
      set { Rows = value; }
    }
    int IStringConvertibleMatrix.Columns {
      get { return Columns; }
      set { Columns = value; }
    }
    bool IStringConvertibleMatrix.Validate(string value, out string errorMessage) {
      return Validate(value, out errorMessage);
    }
    string IStringConvertibleMatrix.GetValue(int rowIndex, int columIndex) {
      return GetValue(rowIndex, columIndex);
    }
    bool IStringConvertibleMatrix.SetValue(string value, int rowIndex, int columnIndex) {
      return SetValue(value, rowIndex, columnIndex);
    }
    #endregion
  }
}