1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2013 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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4 | *
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5 | * This file is part of HeuristicLab.
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6 | *
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7 | * HeuristicLab is free software: you can redistribute it and/or modify
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8 | * it under the terms of the GNU General Public License as published by
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9 | * the Free Software Foundation, either version 3 of the License, or
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10 | * (at your option) any later version.
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11 | *
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12 | * HeuristicLab is distributed in the hope that it will be useful,
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13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 | * GNU General Public License for more details.
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16 | *
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17 | * You should have received a copy of the GNU General Public License
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18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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19 | */
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20 | #endregion
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21 |
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22 | using System.Collections.Generic;
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23 | using HeuristicLab.DataImporter.Command.View;
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24 | using HeuristicLab.DataImporter.Data;
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25 | using HeuristicLab.DataImporter.Data.CommandBase;
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26 | using HeuristicLab.DataImporter.Data.Model;
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27 | using HEAL.Attic;
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28 |
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29 | namespace HeuristicLab.DataImporter.Command {
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30 | [StorableType("B1E2D0F2-A927-4D6E-952E-8CF349E0CB6E")]
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31 | [ViewableCommandInfoAttribute("Moving Median", 1, ColumnGroupState.DoubleColumnSelected, "Change Values", Position = 3,
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32 | OptionsView = typeof(FilterCommandView))]
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33 | public class FilterMovingMedianCommand : FilterCommandBase {
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34 | private Dictionary<int, DoubleColumn> oldColumns;
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35 | private ICollection<int> oldSortedColumnIndices;
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36 |
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37 | [StorableConstructor]
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38 | protected FilterMovingMedianCommand(StorableConstructorFlag _) : base(_) {
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39 | oldColumns = new Dictionary<int, DoubleColumn>();
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40 | }
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41 |
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42 | public FilterMovingMedianCommand(DataSet dataSet, string columnGroupName, int[] affectedColumns)
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43 | : base(dataSet, columnGroupName, affectedColumns) {
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44 | oldColumns = new Dictionary<int, DoubleColumn>();
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45 | }
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46 |
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47 | public override string Description {
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48 | get { return "Filter Column - Moving Median"; }
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49 | }
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50 |
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51 | public override void Execute() {
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52 | base.Execute();
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53 | if (this.WindowSize < 1)
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54 | throw new CommandExecutionException("Window size for filter commands must no be smaller than 1.", this);
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55 | oldSortedColumnIndices = new List<int>(ColumnGroup.SortedColumnIndexes);
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56 | DoubleColumn column;
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57 | foreach (int col in AffectedColumns) {
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58 | if (ColumnGroup.GetColumn(col) is DoubleColumn) {
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59 | column = (DoubleColumn)ColumnGroup.GetColumn(col);
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60 | oldColumns.Add(col, column);
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61 | ColumnGroup.ReplaceColumn(col, CalcNewColumn(column, this.WindowSize));
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62 | }
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63 | }
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64 | ColumnGroup.SortedColumnIndexes = oldSortedColumnIndices;
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65 | ColumnGroup.FireChanged();
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66 | ColumnGroup = null;
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67 | }
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68 |
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69 | public override void UndoExecute() {
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70 | base.UndoExecute();
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71 | foreach (KeyValuePair<int, DoubleColumn> pair in oldColumns)
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72 | ColumnGroup.ReplaceColumn(pair.Key, pair.Value);
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73 | ColumnGroup.SortedColumnIndexes = oldSortedColumnIndices;
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74 | oldSortedColumnIndices = null;
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75 | oldColumns.Clear();
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76 | ColumnGroup.FireChanged();
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77 | ColumnGroup = null;
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78 | }
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79 |
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80 | private DoubleColumn CalcNewColumn(DoubleColumn oldColumn, int windowSize) {
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81 | DoubleColumn newCol = (DoubleColumn)oldColumn.CreateCopyOfColumnWithoutValues();
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82 | int left = windowSize / 2;
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83 | int right = windowSize / 2;
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84 | if (windowSize % 2 == 0) left--;
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85 |
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86 | int startIndex = -1;
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87 | int endIndex = oldColumn.TotalValuesCount;
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88 | //first value newColumn[0]
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89 | newCol.AddValue(oldColumn.GetMedian(0, right >= oldColumn.TotalValuesCount ? oldColumn.TotalValuesCount : right + 1));
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90 | for (int i = 1; i < oldColumn.TotalValuesCount; i++) {
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91 | startIndex = i - left;
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92 | if (startIndex < 0)
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93 | startIndex = 0;
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94 | endIndex = i + right;
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95 | if (endIndex >= oldColumn.TotalValuesCount)
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96 | endIndex = oldColumn.TotalValuesCount - 1;
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97 | newCol.AddValue(oldColumn.GetMedian(startIndex, endIndex + 1));
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98 | }
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99 | newCol.SortOrder = oldColumn.SortOrder;
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100 | return newCol;
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101 | }
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102 | }
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103 | }
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