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source: trunk/sources/HeuristicLab.Data/3.3/DoubleMatrix.cs @ 12966

Last change on this file since 12966 was 12432, checked in by pfleck, 10 years ago

#2395
Use simple round-trip format for doubles because G17 prints some strange numbers (20.22 to 20.219999999999999999).
Some accuracy can still be lost on 64bit machines, but should be very rare and minimal.
double.MaxValue can still be parsed correctly, solving the problem of invalid value for the GUI.

File size: 3.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System.Collections.Generic;
23using System.Text;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.Data {
29  [Item("DoubleMatrix", "Represents a matrix of double values.")]
30  [StorableClass]
31  public class DoubleMatrix : ValueTypeMatrix<double>, IStringConvertibleMatrix {
32    [StorableConstructor]
33    protected DoubleMatrix(bool deserializing) : base(deserializing) { }
34    protected DoubleMatrix(DoubleMatrix original, Cloner cloner)
35      : base(original, cloner) {
36    }
37    public DoubleMatrix() : base() { }
38    public DoubleMatrix(int rows, int columns) : base(rows, columns) { }
39    public DoubleMatrix(int rows, int columns, IEnumerable<string> columnNames) : base(rows, columns, columnNames) { }
40    public DoubleMatrix(int rows, int columns, IEnumerable<string> columnNames, IEnumerable<string> rowNames) : base(rows, columns, columnNames, rowNames) { }
41    public DoubleMatrix(double[,] elements) : base(elements) { }
42    public DoubleMatrix(double[,] elements, IEnumerable<string> columnNames) : base(elements, columnNames) { }
43    public DoubleMatrix(double[,] elements, IEnumerable<string> columnNames, IEnumerable<string> rowNames) : base(elements, columnNames, rowNames) { }
44
45    public override IDeepCloneable Clone(Cloner cloner) {
46      return new DoubleMatrix(this, cloner);
47    }
48
49    protected virtual bool Validate(string value, out string errorMessage) {
50      double val;
51      bool valid = double.TryParse(value, out val);
52      errorMessage = string.Empty;
53      if (!valid) {
54        StringBuilder sb = new StringBuilder();
55        sb.Append("Invalid Value (Valid Value Format: \"");
56        sb.Append(FormatPatterns.GetDoubleFormatPattern());
57        sb.Append("\")");
58        errorMessage = sb.ToString();
59      }
60      return valid;
61    }
62    protected virtual string GetValue(int rowIndex, int columIndex) {
63      return this[rowIndex, columIndex].ToString("r");
64    }
65    protected virtual bool SetValue(string value, int rowIndex, int columnIndex) {
66      double val;
67      if (double.TryParse(value, out val)) {
68        this[rowIndex, columnIndex] = val;
69        return true;
70      } else {
71        return false;
72      }
73    }
74
75    #region IStringConvertibleMatrix Members
76    int IStringConvertibleMatrix.Rows {
77      get { return Rows; }
78      set { Rows = value; }
79    }
80    int IStringConvertibleMatrix.Columns {
81      get { return Columns; }
82      set { Columns = value; }
83    }
84    bool IStringConvertibleMatrix.Validate(string value, out string errorMessage) {
85      return Validate(value, out errorMessage);
86    }
87    string IStringConvertibleMatrix.GetValue(int rowIndex, int columIndex) {
88      return GetValue(rowIndex, columIndex);
89    }
90    bool IStringConvertibleMatrix.SetValue(string value, int rowIndex, int columnIndex) {
91      return SetValue(value, rowIndex, columnIndex);
92    }
93    #endregion
94  }
95}
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