Index: branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.Designer.cs
===================================================================
--- branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.Designer.cs	(revision 7186)
+++ branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.Designer.cs	(revision 7186)
@@ -0,0 +1,61 @@
+﻿namespace HeuristicLab.Problems.DataAnalysis.Views.Regression {
+  partial class RegressionSolutionResidualHistogram {
+    /// <summary> 
+    /// Required designer variable.
+    /// </summary>
+    private System.ComponentModel.IContainer components = null;
+
+    /// <summary> 
+    /// Clean up any resources being used.
+    /// </summary>
+    /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+    protected override void Dispose(bool disposing) {
+      if (disposing && (components != null)) {
+        components.Dispose();
+      }
+      base.Dispose(disposing);
+    }
+
+    #region Component Designer generated code
+
+    /// <summary> 
+    /// Required method for Designer support - do not modify 
+    /// the contents of this method with the code editor.
+    /// </summary>
+    private void InitializeComponent() {
+      System.Windows.Forms.DataVisualization.Charting.ChartArea chartArea1 = new System.Windows.Forms.DataVisualization.Charting.ChartArea();
+      System.Windows.Forms.DataVisualization.Charting.Legend legend1 = new System.Windows.Forms.DataVisualization.Charting.Legend();
+      this.chart = new HeuristicLab.Visualization.ChartControlsExtensions.EnhancedChart();
+      ((System.ComponentModel.ISupportInitialize)(this.chart)).BeginInit();
+      this.SuspendLayout();
+      // 
+      // chart
+      // 
+      chartArea1.Name = "ChartArea";
+      this.chart.ChartAreas.Add(chartArea1);
+      this.chart.Dock = System.Windows.Forms.DockStyle.Fill;
+      legend1.Alignment = System.Drawing.StringAlignment.Center;
+      legend1.Docking = System.Windows.Forms.DataVisualization.Charting.Docking.Top;
+      legend1.Name = "Default";
+      this.chart.Legends.Add(legend1);
+      this.chart.Location = new System.Drawing.Point(0, 0);
+      this.chart.Name = "chart";
+      this.chart.Size = new System.Drawing.Size(150, 150);
+      this.chart.TabIndex = 2;
+      // 
+      // RegressionSolutionResidualHistogram
+      // 
+      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+      this.Controls.Add(this.chart);
+      this.Name = "RegressionSolutionResidualHistogram";
+      ((System.ComponentModel.ISupportInitialize)(this.chart)).EndInit();
+      this.ResumeLayout(false);
+
+    }
+
+    #endregion
+
+    private Visualization.ChartControlsExtensions.EnhancedChart chart;
+  }
+}
Index: branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.cs
===================================================================
--- branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.cs	(revision 7186)
+++ branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.cs	(revision 7186)
@@ -0,0 +1,131 @@
+﻿#region License Information
+/* HeuristicLab
+ * Copyright (C) 2002-2011 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
+ *
+ * This file is part of HeuristicLab.
+ *
+ * HeuristicLab is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * HeuristicLab is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Windows.Forms.DataVisualization.Charting;
+using HeuristicLab.MainForm;
+
+namespace HeuristicLab.Problems.DataAnalysis.Views.Regression {
+  [View("Residual Histogram")]
+  [Content(typeof(IRegressionSolution))]
+  public partial class RegressionSolutionResidualHistogram : DataAnalysisSolutionEvaluationView {
+    private const string ALL_SERIES = "All samples";
+    private const string TRAINING_SERIES = "Training samples";
+    private const string TEST_SERIES = "Test samples";
+
+    // for test purposes
+    private const int bins = 9;
+
+    public new IRegressionSolution Content {
+      get { return (IRegressionSolution)base.Content; }
+      set { base.Content = value; }
+    }
+
+    public RegressionSolutionResidualHistogram() {
+      InitializeComponent();
+
+      this.chart.Series.Add(ALL_SERIES);
+      this.chart.Series[ALL_SERIES].LegendText = ALL_SERIES;
+      this.chart.Series[ALL_SERIES].ChartType = SeriesChartType.Column;
+
+      //this.chart.Series.Add(TRAINING_SERIES);
+      //this.chart.Series[TRAINING_SERIES].LegendText = TRAINING_SERIES;
+      //this.chart.Series[TRAINING_SERIES].ChartType = SeriesChartType.FastPoint;
+      //this.chart.Series[TRAINING_SERIES].Points.Add(1.0);
+
+      //this.chart.Series.Add(TEST_SERIES);
+      //this.chart.Series[TEST_SERIES].LegendText = TEST_SERIES;
+      //this.chart.Series[TEST_SERIES].ChartType = SeriesChartType.FastPoint;
+
+      //configure axis 
+      this.chart.CustomizeAllChartAreas();
+      this.chart.ChartAreas[0].AxisX.Title = "Residuals";
+      this.chart.ChartAreas[0].CursorX.IsUserSelectionEnabled = true;
+      this.chart.ChartAreas[0].AxisX.ScaleView.Zoomable = true;
+      this.chart.ChartAreas[0].CursorX.Interval = 1;
+      this.chart.ChartAreas[0].CursorY.Interval = 1;
+
+      this.chart.ChartAreas[0].AxisY.Title = "Relative Frequency";
+      this.chart.ChartAreas[0].CursorY.IsUserSelectionEnabled = true;
+      this.chart.ChartAreas[0].AxisY.ScaleView.Zoomable = true;
+      this.chart.ChartAreas[0].AxisY.IsStartedFromZero = true;
+    }
+
+    private void RedrawChart() {
+      this.chart.Series[ALL_SERIES].Points.Clear();
+      if (Content != null) {
+        List<double> residuals = new List<double>();
+        IEnumerable<double> targetValues = Content.ProblemData.Dataset.GetDoubleValues(Content.ProblemData.TargetVariable);
+        IEnumerable<double> estimatedValues = Content.EstimatedValues;
+        for (int i = 0; i < Content.ProblemData.Dataset.Rows; i++) {
+          residuals.Add(estimatedValues.ElementAt(i) - targetValues.ElementAt(i));
+        }
+
+        //no check if both are negative
+        //assumption that all values are around zero
+        double max = Math.Ceiling(Math.Max(Math.Abs(residuals.Min()), Math.Abs(residuals.Max())));
+        double intervalWidth = (max * 2) / bins;
+        double intervalCenter = intervalWidth / 2.0;
+        double current = -max;
+
+        Series histogramSeries = this.chart.Series[ALL_SERIES];
+
+        Dictionary<double, int> frequencies = new Dictionary<double, int>();
+
+        for (int i = 0; i <= bins; i++) {
+          IEnumerable<double> help = residuals.Where(x => x >= (current - intervalCenter) && x < (current + intervalCenter));
+          frequencies.Add(current, help.Count());
+          current += intervalWidth;
+        }
+
+        foreach (var item in frequencies) {
+          histogramSeries.Points.AddXY(item.Key, item.Value);
+        }
+      }
+    }
+
+    #region events
+    protected override void RegisterContentEvents() {
+      base.RegisterContentEvents();
+      Content.ModelChanged += new EventHandler(Content_ModelChanged);
+      Content.ProblemDataChanged += new EventHandler(Content_ProblemDataChanged);
+    }
+    protected override void DeregisterContentEvents() {
+      base.DeregisterContentEvents();
+      Content.ModelChanged -= new EventHandler(Content_ModelChanged);
+      Content.ProblemDataChanged -= new EventHandler(Content_ProblemDataChanged);
+    }
+
+    protected override void OnContentChanged() {
+      base.OnContentChanged();
+      RedrawChart();
+    }
+    private void Content_ProblemDataChanged(object sender, EventArgs e) {
+      RedrawChart();
+    }
+    private void Content_ModelChanged(object sender, EventArgs e) {
+      RedrawChart();
+    }
+    #endregion
+  }
+}
Index: branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.resx
===================================================================
--- branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.resx	(revision 7186)
+++ branches/RegressionBenchmarks/HeuristicLab.Problems.DataAnalysis.Views/3.4/Regression/RegressionSolutionResidualHistogram.resx	(revision 7186)
@@ -0,0 +1,120 @@
+﻿<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
