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source: branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Command/MissingValues/FillMissingValuesWithMedianCommand.cs @ 8520

Last change on this file since 8520 was 7267, checked in by gkronber, 13 years ago

#1734 updated copyright year in all files of the DataImporter branch

File size: 2.8 KB
RevLine 
[6134]1#region License Information
2/* HeuristicLab
[7267]3 * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
[6134]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;
[6133]23using System.Collections.Generic;
24using System.Linq;
25using System.Text;
26using System.Windows.Forms;
27using HeuristicLab.DataImporter.Data;
28using HeuristicLab.DataImporter.Data.CommandBase;
29using HeuristicLab.DataImporter.Data.Model;
30using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
31
32namespace HeuristicLab.DataImporter.Command {
33  [StorableClass]
34  [ViewableCommandInfoAttribute("Median", 1, ColumnGroupState.DoubleColumnSelected | ColumnGroupState.AnySelectedColumnContainsNull,
35    "Handle Missing Values", Position = 1)]
36  public class FillMissingValuesWithMedianCommand : FillMissingValueCommandBase {
37    private FillMissingValuesWithMedianCommand()
38      : base(null, string.Empty, null) {
39    }
40
41    public FillMissingValuesWithMedianCommand(DataSet dataSet, string columnGroupName, int[] affectedColumns) :
42      base(dataSet, columnGroupName, affectedColumns) {
43    }
44
45    public override string Description {
46      get { return "Fill missing values with median"; }
47    }
48
49    public override void Execute() {
50      base.Execute();
51      DoubleColumn column;
52      double? median;
53      oldSortOrder = ColumnGroup.SortOrdersForColumns.ToList();
54      oldSortedColumnIndexes = new List<int>(ColumnGroup.SortedColumnIndexes);
55      foreach (int col in AffectedColumns) {
56        if (ColumnGroup.GetColumn(col) is DoubleColumn && ColumnGroup.GetColumn(col).ContainsNullValues) {
57          column = (DoubleColumn)ColumnGroup.Columns.ElementAt(col);
58          if (column.SortOrder != SortOrder.None)
59            ColumnGroup.ResetSorting();
60          nullValues.Add(col, new List<int>());
61          median = column.Median;
62          for (int j = 0; j < column.TotalValuesCount; j++) {
63            if (column.GetValue(j) == null) {
64              column.ChangeValue(j, median);
65              this.nullValues[col].Add(j);
66            }
67          }
68        }
69      }
70      ColumnGroup.FireChanged();
71      ColumnGroup = null;
72    }
73  }
74}
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