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source: trunk/sources/HeuristicLab.Problems.DataAnalysis/3.3/Dataset.cs @ 4239

Last change on this file since 4239 was 4239, checked in by gkronber, 14 years ago

Merged improvements of symbolic simplifier (revisions: r4220, r4226, r4235:4238) back into trunk. #1026

File size: 7.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2010 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;
23using System.Collections.Generic;
24using System.Linq;
25using HeuristicLab.Common;
26using HeuristicLab.Core;
27using HeuristicLab.Data;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.Problems.DataAnalysis {
31  [Item("Dataset", "Represents a dataset containing data that should be analyzed.")]
32  [StorableClass]
33  public sealed class Dataset : NamedItem, IStringConvertibleMatrix {
34    // empty constructor for cloning
35    private Dataset()
36      : base() {
37    }
38
39    [StorableConstructor]
40    private Dataset(bool deserializing)
41      : base(deserializing) {
42    }
43
44    public Dataset(IEnumerable<string> variableNames, double[,] data)
45      : base() {
46      Name = "-";
47      if (variableNames.Count() != data.GetLength(1)) {
48        throw new ArgumentException("Number of variable names doesn't match the number of columns of data");
49      }
50      this.data = (double[,])data.Clone();
51      this.variableNames = variableNames.ToArray();
52    }
53
54    [Storable]
55    private string[] variableNames;
56    public IEnumerable<string> VariableNames {
57      get { return variableNames; }
58    }
59
60    [Storable]
61    private double[,] data;
62    private double[,] Data {
63      get { return data; }
64    }
65
66    // elementwise access
67    public double this[int rowIndex, int columnIndex] {
68      get { return data[rowIndex, columnIndex]; }
69    }
70    public double this[string variableName, int rowIndex] {
71      get {
72        int columnIndex = GetVariableIndex(variableName);
73        return data[rowIndex, columnIndex];
74      }
75    }
76
77    public double[] GetVariableValues(int variableIndex) {
78      return GetVariableValues(variableIndex, 0, Rows);
79    }
80    public double[] GetVariableValues(int variableIndex, int start, int end) {
81      if (start < 0 || !(start <= end))
82        throw new ArgumentException("Start must be between 0 and end (" + end + ").");
83      if (end > Rows || end < start)
84        throw new ArgumentException("End must be between start (" + start + ") and dataset rows (" + Rows + ").");
85
86      double[] values = new double[end - start];
87      for (int i = 0; i < end - start; i++)
88        values[i] = data[i + start, variableIndex];
89      return values;
90    }
91    public double[] GetVariableValues(string variableName) {
92      return GetVariableValues(GetVariableIndex(variableName), 0, Rows);
93    }
94    public double[] GetVariableValues(string variableName, int start, int end) {
95      return GetVariableValues(GetVariableIndex(variableName), start, end);
96    }
97
98    public IEnumerable<double> GetEnumeratedVariableValues(int variableIndex) {
99      return GetEnumeratedVariableValues(variableIndex, 0, Rows);
100    }
101    public IEnumerable<double> GetEnumeratedVariableValues(int variableIndex, int start, int end) {
102      if (start < 0 || !(start <= end))
103        throw new ArgumentException("Start must be between 0 and end (" + end + ").");
104      if (end > Rows || end < start)
105        throw new ArgumentException("End must be between start (" + start + ") and dataset rows (" + Rows + ").");
106      for (int i = 0; i < end - start; i++)
107        yield return data[i + start, variableIndex];
108    }
109    public IEnumerable<double> GetEnumeratedVariableValues(int variableIndex, IEnumerable<int> rows) {
110      foreach (int row in rows)
111        yield return data[row, variableIndex];
112    }
113
114    public IEnumerable<double> GetEnumeratedVariableValues(string variableName) {
115      return GetEnumeratedVariableValues(GetVariableIndex(variableName), 0, Rows);
116    }
117    public IEnumerable<double> GetEnumeratedVariableValues(string variableName, int start, int end) {
118      return GetEnumeratedVariableValues(GetVariableIndex(variableName), start, end);
119    }
120    public IEnumerable<double> GetEnumeratedVariableValues(string variableName, IEnumerable<int> rows) {
121      return GetEnumeratedVariableValues(GetVariableIndex(variableName), rows);
122    }
123
124
125
126    public string GetVariableName(int variableIndex) {
127      return variableNames[variableIndex];
128    }
129
130    public int GetVariableIndex(string variableName) {
131      for (int i = 0; i < variableNames.Length; i++) {
132        if (variableNames[i].Equals(variableName)) return i;
133      }
134      throw new ArgumentException("The variable name " + variableName + " was not found.");
135    }
136
137    public double[,] GetClonedData() {
138      return (double[,])data.Clone();
139    }
140
141    public override IDeepCloneable Clone(Cloner cloner) {
142      Dataset clone = (Dataset)base.Clone(cloner);
143      clone.variableNames = variableNames;
144      clone.data = data;
145      return clone;
146    }
147
148    public event EventHandler Reset;
149    private void OnReset(EventArgs e) {
150      var listeners = Reset;
151      if (listeners != null) listeners(this, e);
152    }
153
154    #region IStringConvertibleMatrix Members
155
156    public int Rows {
157      get { return data.GetLength(0); }
158      set { throw new NotSupportedException(); }
159    }
160
161    public int Columns {
162      get { return data.GetLength(1); }
163      set { throw new NotSupportedException(); }
164    }
165
166    public bool SortableView {
167      get { return false; }
168      set { throw new NotSupportedException(); }
169    }
170
171    public bool ReadOnly {
172      get { return true; }
173    }
174
175    IEnumerable<string> IStringConvertibleMatrix.ColumnNames {
176      get { return this.VariableNames; }
177      set { throw new NotSupportedException(); }
178    }
179
180    IEnumerable<string> IStringConvertibleMatrix.RowNames {
181      get { return new List<string>(); }
182      set { throw new NotSupportedException(); }
183    }
184
185    public bool Validate(string value, out string errorMessage) {
186      throw new NotSupportedException();
187    }
188
189    public string GetValue(int rowIndex, int columnIndex) {
190      return data[rowIndex, columnIndex].ToString();
191    }
192
193    public bool SetValue(string value, int rowIndex, int columnIndex) {
194      throw new NotSupportedException();
195    }
196
197    public event EventHandler ColumnNamesChanged;
198    private void OnColumnNamesChanged() {
199      EventHandler handler = ColumnNamesChanged;
200      if (handler != null)
201        handler(this, EventArgs.Empty);
202    }
203    public event EventHandler RowNamesChanged;
204    private void OnRowNamesChanged() {
205      EventHandler handler = RowNamesChanged;
206      if (handler != null)
207        handler(this, EventArgs.Empty);
208    }
209    public event EventHandler SortableViewChanged;
210    private void OnSortableViewChanged() {
211      EventHandler handler = SortableViewChanged;
212      if (handler != null)
213        handler(this, EventArgs.Empty);
214    }
215    public event EventHandler<EventArgs<int, int>> ItemChanged;
216    private void OnItemChanged(int rowIndex, int columnIndex) {
217      if (ItemChanged != null)
218        ItemChanged(this, new EventArgs<int, int>(rowIndex, columnIndex));
219      OnToStringChanged();
220    }
221    #endregion
222  }
223}
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