Changeset 13850 for branches/HeuristicLab.RegressionSolutionGradientView/HeuristicLab.Problems.DataAnalysis.Views/3.4/DensityTrackbar.cs

Timestamp:

05/18/16 16:28:59 (9 years ago)

Author:

pfleck

Message:

#2597

• Extracted DensityChart from DensityTrackbar.
• Added DensityChart to RegressionSolutionTargetResponseView with different options (none/training/test/all).
• Moved RegressionSolutionGradientView and RegressionSolutionTargetResponseView to subfolder.

File:

• branches/HeuristicLab.RegressionSolutionGradientView/HeuristicLab.Problems.DataAnalysis.Views/3.4/DensityTrackbar.cs (modified) (3 diffs)

branches/HeuristicLab.RegressionSolutionGradientView/HeuristicLab.Problems.DataAnalysis.Views/3.4/DensityTrackbar.cs

@@ -23 +23 @@
 using System.Collections.Generic;
 using System.Globalization;
-using System.Linq;
 using System.Windows.Forms;
-using System.Windows.Forms.DataVisualization.Charting;
-using HeuristicLab.Common;
 using HeuristicLab.Problems.DataAnalysis;
 
@@ -76 +73 @@
 
     private void UpdateDensityChart() {
-      var series = chart.Series[0];
-      ClearPointsQuick(series.Points);
-
-      int numBuckets = trackBar.Maximum - trackBar.Minimum;
-      var buckets = new double[numBuckets];
-      var bucketSize = (Limits.Upper - Limits.Lower) / buckets.Length;
-      foreach (var value in trainingValues) {
-        if (bucketSize > 0.0) {
-          int bucketIndex = (int)((value - Limits.Lower) / bucketSize);
-          if (bucketIndex == numBuckets) {
-            bucketIndex--;
-          }
-          buckets[bucketIndex] += 1.0;
-        }
-      }
-
-      // set minimum height of all non-zero buckets on 20% of maximum
-      double min = buckets.Max() / 20.0;
-      for (int i = 0; i < buckets.Length; i++) {
-        if (buckets[i] >= 1 && buckets[i] < min)
-          buckets[i] = min;
-      }
-
-      series.Points.DataBindY(buckets);
-
-      // Set trackbar on highest density
-      double highestDensity = buckets.Max();
-      var highestIndices = buckets.Select((v, i) => new { v, i }).Where(x => x.v.IsAlmost(highestDensity)).Select(x => x.i).ToList();
-      trackBar.Value = highestIndices[highestIndices.Count / 2];
+      chart.UpdateChart(trainingValues, Limits.Lower, Limits.Upper,
+        numBuckets: trackBar.Maximum - trackBar.Minimum, minimumHeight: 0.1);
     }
 
@@ -155 +125 @@
       return (int)((value - lower) / ((upper - lower) / numberOfTicks));
     }
-
-    // workaround as per http://stackoverflow.com/questions/5744930/datapointcollection-clear-performance
-    private static void ClearPointsQuick(DataPointCollection points) {
-      points.SuspendUpdates();
-      while (points.Count > 0)
-        points.RemoveAt(points.Count - 1);
-      points.ResumeUpdates();
-    }
-
     #endregion
   }