source: branches/WebJobManager/HeuristicLab.Data/3.3/PercentMatrix.cs

#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("PercentMatrix", "Represents a matrix of double values in percent.")]
  [StorableClass]
  public class PercentMatrix : DoubleMatrix {
    [StorableConstructor]
    protected PercentMatrix(bool deserializing) : base(deserializing) { }
    protected PercentMatrix(PercentMatrix original, Cloner cloner)
      : base(original, cloner) {
    }
    public PercentMatrix() : base() { }
    public PercentMatrix(int rows, int columns) : base(rows, columns) { }
    public PercentMatrix(int rows, int columns, IEnumerable<string> columnNames) : base(rows, columns, columnNames) { }
    public PercentMatrix(int rows, int columns, IEnumerable<string> columnNames, IEnumerable<string> rowNames) : base(rows, columns, columnNames, rowNames) { }
    public PercentMatrix(double[,] elements) : base(elements) { }
    public PercentMatrix(double[,] elements, IEnumerable<string> columnNames) : base(elements, columnNames) { }
    public PercentMatrix(double[,] elements, IEnumerable<string> columnNames, IEnumerable<string> rowNames) : base(elements, columnNames, rowNames) { }

    public override IDeepCloneable Clone(Cloner cloner) {
      return new PercentMatrix(this, cloner);
    }
        public static PercentMatrix 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)/100)).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 PercentMatrix(b);
            }
            catch (System.FormatException e)
            {
                return null;
            }
        }
        public override string ToString() {
      StringBuilder sb = new StringBuilder();
      sb.Append("[");
      if (matrix.Length > 0) {
        for (int i = 0; i < Rows; i++) {
          sb.Append("[").Append(matrix[i, 0].ToString("#0.#################### %"));  // percent format
          for (int j = 1; j < Columns; j++)
            sb.Append(";").Append(matrix[i, j].ToString("#0.#################### %"));  // percent format
          sb.Append("]");
        }
      }
      sb.Append("]");
      return sb.ToString();
    }

    protected override bool Validate(string value, out string errorMessage) {
      value = value.Replace("%", " ");
      return base.Validate(value, out errorMessage);
    }
    protected override string GetValue(int rowIndex, int columIndex) {
      return this[rowIndex, columIndex].ToString("#0.#################### %");  // percent format
    }
    protected override bool SetValue(string value, int rowIndex, int columnIndex) {
      bool percent = value.Contains("%");
      value = value.Replace("%", " ");
      double val;
      if (double.TryParse(value, out val)) {
        if (percent) {
          if (!(val).IsAlmost(this[rowIndex, columnIndex] * 100.0))
            this[rowIndex, columnIndex] = val == 0 ? 0 : val / 100.0;
        } else {
          this[rowIndex, columnIndex] = val;
        }
        return true;
      } else {
        return false;
      }
    }
  }
}