source: branches/HeuristicLab.DataImporter/HeuristicLab.DataImporter.Command/MissingValues/DeleteColumnsWithMissingValuesThresholdCommand.cs @ 8586

Last change on this file since 8586 was 8586, checked in by sforsten, 7 years ago

#1867: renamed view DeleteWithThreshold to DeleteWithThresholdView

File size: 2.9 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2012 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 HeuristicLab.DataImporter.Command.View;
23using HeuristicLab.DataImporter.Data;
24using HeuristicLab.DataImporter.Data.CommandBase;
25using HeuristicLab.DataImporter.Data.Model;
26using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
27
28namespace HeuristicLab.DataImporter.Command {
29  [StorableClass]
30  [ViewableCommandInfoAttribute("Delete Columns beneath Threshold", 1, ColumnGroupState.AnySelectedColumnContainsNull,
31    "Handle Missing Values", Position = 6, OptionsView = typeof(DeleteWithThresholdView))]
32  public class DeleteColumnsWithMissingValuesThresholdCommand : ColumnGroupCommandWithAffectedColumnsBase, IThresholdCommand {
33    private ColumnBase oldColumn;
34    private int oldColumnIndex;
35
36    [Storable]
37    private double threshold = 0.8;
38    public double Threshold { get { return threshold; } set { threshold = value; } }
39
40    private DeleteColumnsWithMissingValuesThresholdCommand()
41      : base(null, string.Empty, null) {
42    }
43
44    public DeleteColumnsWithMissingValuesThresholdCommand(DataSet dataSet, string columnGroupName, int[] affectedColumns)
45      : base(dataSet, columnGroupName, affectedColumns) {
46    }
47
48    public override void Execute() {
49      base.Execute();
50
51      oldColumnIndex = AffectedColumns[0];
52
53      oldColumn = ColumnGroup.GetColumn(oldColumnIndex);
54      if ((double)oldColumn.NonNullValuesCount / (double)oldColumn.TotalValuesCount < Threshold) {
55        ColumnGroup.RemoveColumn(oldColumn);
56      } else {
57        oldColumn = null;
58      }
59
60      ColumnGroup.FireChanged();
61      ColumnGroup = null;
62    }
63
64    public override void UndoExecute() {
65      base.UndoExecute();
66      if (oldColumn != null) {
67        ColumnGroup.InsertColumn(oldColumnIndex, oldColumn);
68      }
69      oldColumn = null;
70      oldColumnIndex = -1;
71      ColumnGroup.FireChanged();
72      ColumnGroup = null;
73    }
74
75    public override string Description {
76      get { return "Delete columns with a missing value percentage beneath a certain threshold"; }
77    }
78  }
79}
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