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source: branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Command/MissingValues/FillMissingValuesWithMedianCommand.cs @ 12296

Last change on this file since 12296 was 9615, checked in by mkommend, 11 years ago

#1734: Updated copyright information in all DataImporter classes.

File size: 2.8 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2013 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.Linq;
24using System.Windows.Forms;
25using HeuristicLab.DataImporter.Data;
26using HeuristicLab.DataImporter.Data.CommandBase;
27using HeuristicLab.DataImporter.Data.Model;
28using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
29
30namespace HeuristicLab.DataImporter.Command {
31  [StorableClass]
32  [ViewableCommandInfoAttribute("Median", 1, ColumnGroupState.DoubleColumnSelected | ColumnGroupState.AnySelectedColumnContainsNull,
33    "Handle Missing Values", Position = 1)]
34  public class FillMissingValuesWithMedianCommand : FillMissingValueCommandBase {
35    [StorableConstructor]
36    protected FillMissingValuesWithMedianCommand(bool deserializing) : base(deserializing) { }
37    public FillMissingValuesWithMedianCommand(DataSet dataSet, string columnGroupName, int[] affectedColumns) :
38      base(dataSet, columnGroupName, affectedColumns) {
39    }
40
41    public override string Description {
42      get { return "Fill missing values with median"; }
43    }
44
45    public override void Execute() {
46      base.Execute();
47      DoubleColumn column;
48      double? median;
49      oldSortOrder = ColumnGroup.SortOrdersForColumns.ToList();
50      oldSortedColumnIndexes = new List<int>(ColumnGroup.SortedColumnIndexes);
51      foreach (int col in AffectedColumns) {
52        if (ColumnGroup.GetColumn(col) is DoubleColumn && ColumnGroup.GetColumn(col).ContainsNullValues) {
53          column = (DoubleColumn)ColumnGroup.Columns.ElementAt(col);
54          if (column.SortOrder != SortOrder.None)
55            ColumnGroup.ResetSorting();
56          nullValues.Add(col, new List<int>());
57          median = column.Median;
58          for (int j = 0; j < column.TotalValuesCount; j++) {
59            if (column.GetValue(j) == null) {
60              column.ChangeValue(j, median);
61              this.nullValues[col].Add(j);
62            }
63          }
64        }
65      }
66      ColumnGroup.FireChanged();
67      ColumnGroup = null;
68    }
69  }
70}
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