Changeset 15846 for branches/2906_Transformations/HeuristicLab.DataPreprocessing/3.4/Content/TransformationContent.cs

Timestamp:

03/19/18 10:25:45 (6 years ago)

Author:

pfleck

Message:

#2906 First concept of simple transformation (single target transformation)

File:

• branches/2906_Transformations/HeuristicLab.DataPreprocessing/3.4/Content/TransformationContent.cs (modified) (3 diffs)

branches/2906_Transformations/HeuristicLab.DataPreprocessing/3.4/Content/TransformationContent.cs

@@ -20 +20 @@
 #endregion
 
+using System.Collections.Generic;
 using System.Drawing;
+using System.Linq;
 using HeuristicLab.Common;
 using HeuristicLab.Core;
@@ -35 +37 @@
 
     [Storable]
-    public ICheckedItemList<ITransformation> CheckedTransformationList { get; private set; }
+    public ICheckedItemList<IDataAnalysisTransformation> CheckedTransformationList { get; private set; }
 
     #region Constructor, Cloning & Persistence
     public TransformationContent(IFilteredPreprocessingData preprocessingData)
       : base(preprocessingData) {
-      CheckedTransformationList = new CheckedItemList<ITransformation>();
+      CheckedTransformationList = new CheckedItemList<IDataAnalysisTransformation>();
     }
 
@@ -55 +57 @@
       : base(deserializing) { }
     #endregion
+
+    public bool ApplyTransformations(out IEnumerable<string> errorMessages) {
+      var transformations = CheckedTransformationList.CheckedItems.Select(x => x.Value);
+
+      bool success = true;
+      var errors = new List<string>();
+      errorMessages = errors;
+
+      foreach (var transformation in transformations) {
+        var sourceVariable = transformation.OriginalVariable;
+        var targetVariable = transformation.TransformedVariable ?? sourceVariable + " Transformed";
+        var sourceIdx = PreprocessingData.GetColumnIndex(sourceVariable);
+
+        if (transformation.Transformation is ITransformation<double> trans && PreprocessingData.VariableHasType<double>(sourceIdx)) {
+          if (!PreprocessingData.VariableNames.Contains(targetVariable))
+            PreprocessingData.InsertColumn<double>(targetVariable, PreprocessingData.Columns);
+          var targetIdx = PreprocessingData.GetColumnIndex(targetVariable);
+
+          if (!PreprocessingData.VariableHasType<double>(targetIdx)) { success = false; errors.Add("Target column is not double."); continue; }
+
+          var sourceData = PreprocessingData.GetValues<double>(sourceIdx);
+          if (!trans.Check(sourceData, out string msg)) { success = false; errors.Add(msg); continue; }
+
+          trans.Configure(sourceData);
+          var transformedData = trans.Apply(sourceData).ToList();
+
+          PreprocessingData.SetValues(targetIdx, transformedData);
+
+          PreprocessingData.Transformations.Add(transformation);
+          CheckedTransformationList.SetItemCheckedState(transformation, false);
+        } else {
+          success = false;
+          errors.Add("Transformation datatype is not supported.");
+        }
+      }
+
+      return success;
+    }
   }
 }