Last change
on this file since 16640 was
16640,
checked in by gkronber, 5 years ago
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#2971: merged r16565:16631 from trunk/HeuristicLab.Problems.DataAnalysis to branch/HeuristicLab.Problems.DataAnalysis (resolving all conflicts)
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File size:
1.5 KB
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1 |
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2 | using System;
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3 | using System.Collections.Generic;
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4 | using System.Linq;
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5 | using HeuristicLab.Common;
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6 | using HeuristicLab.Core;
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7 | using HEAL.Attic;
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8 | using HEAL.Attic;
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9 |
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10 | namespace HeuristicLab.Problems.DataAnalysis {
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11 | [StorableType("8D242A5A-5EBB-4618-958E-A7EF34151508")]
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12 | [Item("Reciprocal Transformation", "f(x) = 1 / x | Represents a reciprocal transformation.")]
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13 | public class ReciprocalTransformation : Transformation<double> {
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14 |
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15 | #region properties
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16 | public override string ShortName {
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17 | get { return "Inv"; }
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18 | }
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19 | #endregion
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20 |
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21 | [StorableConstructor]
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22 | protected ReciprocalTransformation(StorableConstructorFlag _) : base(_) { }
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23 | protected ReciprocalTransformation(ReciprocalTransformation original, Cloner cloner)
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24 | : base(original, cloner) {
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25 | }
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26 | public ReciprocalTransformation(IEnumerable<string> allowedColumns)
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27 | : base(allowedColumns) {
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28 | }
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29 |
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30 | public override IDeepCloneable Clone(Cloner cloner) {
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31 | return new ReciprocalTransformation(this, cloner);
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32 | }
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33 |
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34 | public override IEnumerable<double> Apply(IEnumerable<double> data) {
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35 | return data.Select(d => d > 0 ? 1.0 / d : d);
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36 | }
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37 |
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38 | public override bool Check(IEnumerable<double> data, out string errorMsg) {
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39 | errorMsg = null;
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40 | int errorCounter = data.Count(i => i <= 0.0);
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41 | if (errorCounter > 0) {
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42 | errorMsg = String.Format("{0} values are zero or below zero. 1/x can not be applied onto these values", errorCounter);
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43 | return false;
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44 | }
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45 | return true;
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46 | }
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47 | }
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48 | }
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