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source: branches/RemoveBackwardsCompatibility/HeuristicLab.Analysis.Views/3.3/ScatterPlotView.cs @ 15061

Last change on this file since 15061 was 12679, checked in by mkommend, 9 years ago

#2274: Removed commented code from scatterplot view.
File size: 22.5 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Collections.Generic;
24using System.Drawing;
25using System.Linq;
26using System.Windows.Forms;
27using System.Windows.Forms.DataVisualization.Charting;
28using HeuristicLab.Collections;
29using HeuristicLab.Common;
30using HeuristicLab.Core.Views;
31using HeuristicLab.MainForm;
32
33namespace HeuristicLab.Analysis.Views {
34  [View("ScatterPlot View")]
35  [Content(typeof(ScatterPlot), true)]
36  public partial class ScatterPlotView : NamedItemView, IConfigureableView {
37    protected List<Series> invisibleSeries;
38    protected Dictionary<IObservableList<Point2D<double>>, ScatterPlotDataRow> pointsRowsTable;
39    private double xMin, xMax, yMin, yMax;
40
41    public new ScatterPlot Content {
42      get { return (ScatterPlot)base.Content; }
43      set { base.Content = value; }
44    }
45
46    public ScatterPlotView() {
47      InitializeComponent();
48      pointsRowsTable = new Dictionary<IObservableList<Point2D<double>>, ScatterPlotDataRow>();
49      invisibleSeries = new List<Series>();
50      chart.CustomizeAllChartAreas();
51      chart.ChartAreas[0].CursorX.Interval = 1;
52    }
53
54    #region Event Handler Registration
55    protected override void DeregisterContentEvents() {
56      foreach (ScatterPlotDataRow row in Content.Rows)
57        DeregisterScatterPlotDataRowEvents(row);
58      Content.VisualPropertiesChanged -= new EventHandler(Content_VisualPropertiesChanged);
59      Content.Rows.ItemsAdded -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsAdded);
60      Content.Rows.ItemsRemoved -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsRemoved);
61      Content.Rows.ItemsReplaced -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsReplaced);
62      Content.Rows.CollectionReset -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_CollectionReset);
63      base.DeregisterContentEvents();
64    }
65    protected override void RegisterContentEvents() {
66      base.RegisterContentEvents();
67      Content.VisualPropertiesChanged += new EventHandler(Content_VisualPropertiesChanged);
68      Content.Rows.ItemsAdded += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsAdded);
69      Content.Rows.ItemsRemoved += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsRemoved);
70      Content.Rows.ItemsReplaced += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsReplaced);
71      Content.Rows.CollectionReset += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_CollectionReset);
72    }
73
74    protected virtual void RegisterScatterPlotDataRowEvents(ScatterPlotDataRow row) {
75      row.NameChanged += new EventHandler(Row_NameChanged);
76      row.VisualPropertiesChanged += new EventHandler(Row_VisualPropertiesChanged);
77      pointsRowsTable.Add(row.Points, row);
78      row.Points.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsAdded);
79      row.Points.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsRemoved);
80      row.Points.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsReplaced);
81      row.Points.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_CollectionReset);
82    }
83    protected virtual void DeregisterScatterPlotDataRowEvents(ScatterPlotDataRow row) {
84      row.Points.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsAdded);
85      row.Points.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsRemoved);
86      row.Points.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsReplaced);
87      row.Points.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_CollectionReset);
88      pointsRowsTable.Remove(row.Points);
89      row.VisualPropertiesChanged -= new EventHandler(Row_VisualPropertiesChanged);
90      row.NameChanged -= new EventHandler(Row_NameChanged);
91    }
92    #endregion
93
94    protected override void OnContentChanged() {
95      base.OnContentChanged();
96      invisibleSeries.Clear();
97      chart.Titles[0].Text = string.Empty;
98      chart.ChartAreas[0].AxisX.Title = string.Empty;
99      chart.ChartAreas[0].AxisY.Title = string.Empty;
100      chart.Series.Clear();
101      if (Content != null) {
102        chart.Titles[0].Text = Content.Name;
103        AddScatterPlotDataRows(Content.Rows);
104        ConfigureChartArea(chart.ChartAreas[0]);
105        RecalculateMinMaxPointValues();
106        RecalculateAxesScale(chart.ChartAreas[0]);
107      }
108    }
109
110    protected override void SetEnabledStateOfControls() {
111      base.SetEnabledStateOfControls();
112      chart.Enabled = Content != null;
113    }
114
115    public void ShowConfiguration() {
116      if (Content != null) {
117        using (ScatterPlotVisualPropertiesDialog dialog = new ScatterPlotVisualPropertiesDialog(Content)) {
118          dialog.ShowDialog(this);
119        }
120      } else MessageBox.Show("Nothing to configure.");
121    }
122
123    protected virtual void AddScatterPlotDataRows(IEnumerable<ScatterPlotDataRow> rows) {
124      foreach (var row in rows) {
125        RegisterScatterPlotDataRowEvents(row);
126        Series series = new Series(row.Name);
127        if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
128        else series.LegendText = row.Name;
129        ConfigureSeries(series, row);
130        FillSeriesWithRowValues(series, row);
131        chart.Series.Add(series);
132      }
133      ConfigureChartArea(chart.ChartAreas[0]);
134      RecalculateMinMaxPointValues();
135      RecalculateAxesScale(chart.ChartAreas[0]);
136      UpdateYCursorInterval();
137    }
138
139    protected virtual void RemoveScatterPlotDataRows(IEnumerable<ScatterPlotDataRow> rows) {
140      foreach (var row in rows) {
141        DeregisterScatterPlotDataRowEvents(row);
142        Series series = chart.Series[row.Name];
143        chart.Series.Remove(series);
144        if (invisibleSeries.Contains(series))
145          invisibleSeries.Remove(series);
146      }
147      RecalculateMinMaxPointValues();
148      RecalculateAxesScale(chart.ChartAreas[0]);
149    }
150
151    private void ConfigureSeries(Series series, ScatterPlotDataRow row) {
152      series.BorderWidth = 1;
153      series.BorderDashStyle = ChartDashStyle.Solid;
154      series.BorderColor = Color.Empty;
155
156      if (row.VisualProperties.Color != Color.Empty)
157        series.Color = row.VisualProperties.Color;
158      else series.Color = Color.Empty;
159      series.IsVisibleInLegend = row.VisualProperties.IsVisibleInLegend;
160      series.ChartType = SeriesChartType.FastPoint;
161      series.MarkerSize = row.VisualProperties.PointSize;
162      series.MarkerStyle = ConvertPointStyle(row.VisualProperties.PointStyle);
163      series.XAxisType = AxisType.Primary;
164      series.YAxisType = AxisType.Primary;
165
166      if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
167      else series.LegendText = row.Name;
168
169      string xAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.XAxisTitle)
170                      ? "X"
171                      : Content.VisualProperties.XAxisTitle;
172      string yAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.YAxisTitle)
173                            ? "Y"
174                            : Content.VisualProperties.YAxisTitle;
175      series.ToolTip =
176        series.LegendText + Environment.NewLine +
177        xAxisTitle + " = " + "#VALX," + Environment.NewLine +
178        yAxisTitle + " = " + "#VAL";
179    }
180
181    private void ConfigureChartArea(ChartArea area) {
182      if (Content.VisualProperties.TitleFont != null) chart.Titles[0].Font = Content.VisualProperties.TitleFont;
183      if (!Content.VisualProperties.TitleColor.IsEmpty) chart.Titles[0].ForeColor = Content.VisualProperties.TitleColor;
184      chart.Titles[0].Text = Content.VisualProperties.Title;
185
186      if (Content.VisualProperties.AxisTitleFont != null) area.AxisX.TitleFont = Content.VisualProperties.AxisTitleFont;
187      if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisX.TitleForeColor = Content.VisualProperties.AxisTitleColor;
188      area.AxisX.Title = Content.VisualProperties.XAxisTitle;
189      area.AxisX.MajorGrid.Enabled = Content.VisualProperties.XAxisGrid;
190
191      if (Content.VisualProperties.AxisTitleFont != null) area.AxisY.TitleFont = Content.VisualProperties.AxisTitleFont;
192      if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisY.TitleForeColor = Content.VisualProperties.AxisTitleColor;
193      area.AxisY.Title = Content.VisualProperties.YAxisTitle;
194      area.AxisY.MajorGrid.Enabled = Content.VisualProperties.YAxisGrid;
195    }
196
197    private void RecalculateAxesScale(ChartArea area) {
198      area.AxisX.Minimum = CalculateMinBound(xMin);
199      area.AxisX.Maximum = CalculateMaxBound(xMax);
200      if (area.AxisX.Minimum == area.AxisX.Maximum) {
201        area.AxisX.Minimum = xMin - 0.5;
202        area.AxisX.Maximum = xMax + 0.5;
203      }
204      area.AxisY.Minimum = CalculateMinBound(yMin);
205      area.AxisY.Maximum = CalculateMaxBound(yMax);
206      if (area.AxisY.Minimum == area.AxisY.Maximum) {
207        area.AxisY.Minimum = yMin - 0.5;
208        area.AxisY.Maximum = yMax + 0.5;
209      }
210      if (xMax - xMin > 0) area.CursorX.Interval = Math.Pow(10, Math.Floor(Math.Log10(area.AxisX.Maximum - area.AxisX.Minimum) - 3));
211      else area.CursorX.Interval = 1;
212      area.AxisX.IsMarginVisible = false;
213
214      if (!Content.VisualProperties.XAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.XAxisMinimumFixedValue)) area.AxisX.Minimum = Content.VisualProperties.XAxisMinimumFixedValue;
215      if (!Content.VisualProperties.XAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.XAxisMaximumFixedValue)) area.AxisX.Maximum = Content.VisualProperties.XAxisMaximumFixedValue;
216      if (!Content.VisualProperties.YAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.YAxisMinimumFixedValue)) area.AxisY.Minimum = Content.VisualProperties.YAxisMinimumFixedValue;
217      if (!Content.VisualProperties.YAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.YAxisMaximumFixedValue)) area.AxisY.Maximum = Content.VisualProperties.YAxisMaximumFixedValue;
218    }
219
220    private static double CalculateMinBound(double min) {
221      if (min == 0) return 0;
222      var scale = Math.Pow(10, Math.Floor(Math.Log10(Math.Abs(min))));
223      return scale * (Math.Floor(min / scale));
224    }
225
226    private static double CalculateMaxBound(double max) {
227      if (max == 0) return 0;
228      var scale = Math.Pow(10, Math.Floor(Math.Log10(Math.Abs(max))));
229      return scale * (Math.Ceiling(max / scale));
230    }
231
232    protected virtual void UpdateYCursorInterval() {
233      double interestingValuesRange = (
234        from series in chart.Series
235        where series.Enabled
236        let values = (from point in series.Points
237                      where !point.IsEmpty
238                      select point.YValues[0]).DefaultIfEmpty(1.0)
239        let range = values.Max() - values.Min()
240        where range > 0.0
241        select range
242        ).DefaultIfEmpty(1.0).Min();
243
244      double digits = (int)Math.Log10(interestingValuesRange) - 3;
245      double yZoomInterval = Math.Pow(10, digits);
246      this.chart.ChartAreas[0].CursorY.Interval = yZoomInterval;
247    }
248
249    #region Event Handlers
250    #region Content Event Handlers
251    protected override void Content_NameChanged(object sender, EventArgs e) {
252      if (InvokeRequired)
253        Invoke(new EventHandler(Content_NameChanged), sender, e);
254      else {
255        chart.Titles[0].Text = Content.Name;
256        base.Content_NameChanged(sender, e);
257      }
258    }
259    private void Content_VisualPropertiesChanged(object sender, EventArgs e) {
260      if (InvokeRequired)
261        Invoke(new EventHandler(Content_VisualPropertiesChanged), sender, e);
262      else {
263        ConfigureChartArea(chart.ChartAreas[0]);
264        RecalculateAxesScale(chart.ChartAreas[0]); // axes min/max could have changed
265      }
266    }
267    #endregion
268    #region Rows Event Handlers
269    private void Rows_ItemsAdded(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
270      if (InvokeRequired)
271        Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsAdded), sender, e);
272      else {
273        AddScatterPlotDataRows(e.Items);
274      }
275    }
276    private void Rows_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
277      if (InvokeRequired)
278        Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsRemoved), sender, e);
279      else {
280        RemoveScatterPlotDataRows(e.Items);
281      }
282    }
283    private void Rows_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
284      if (InvokeRequired)
285        Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsReplaced), sender, e);
286      else {
287        RemoveScatterPlotDataRows(e.OldItems);
288        AddScatterPlotDataRows(e.Items);
289      }
290    }
291    private void Rows_CollectionReset(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
292      if (InvokeRequired)
293        Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_CollectionReset), sender, e);
294      else {
295        RemoveScatterPlotDataRows(e.OldItems);
296        AddScatterPlotDataRows(e.Items);
297      }
298    }
299    #endregion
300    #region Row Event Handlers
301    private void Row_VisualPropertiesChanged(object sender, EventArgs e) {
302      if (InvokeRequired)
303        Invoke(new EventHandler(Row_VisualPropertiesChanged), sender, e);
304      else {
305        ScatterPlotDataRow row = (ScatterPlotDataRow)sender;
306        Series series = chart.Series[row.Name];
307        series.Points.Clear();
308        ConfigureSeries(series, row);
309        FillSeriesWithRowValues(series, row);
310        RecalculateMinMaxPointValues();
311        RecalculateAxesScale(chart.ChartAreas[0]);
312      }
313    }
314    private void Row_NameChanged(object sender, EventArgs e) {
315      if (InvokeRequired)
316        Invoke(new EventHandler(Row_NameChanged), sender, e);
317      else {
318        ScatterPlotDataRow row = (ScatterPlotDataRow)sender;
319        chart.Series[row.Name].Name = row.Name;
320      }
321    }
322    #endregion
323    #region Points Event Handlers
324    private void Points_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
325      if (InvokeRequired)
326        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsAdded), sender, e);
327      else {
328        ScatterPlotDataRow row = null;
329        pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
330        if (row != null) {
331          Series rowSeries = chart.Series[row.Name];
332          if (!invisibleSeries.Contains(rowSeries)) {
333            rowSeries.Points.Clear();
334            FillSeriesWithRowValues(rowSeries, row);
335            RecalculateMinMaxPointValues();
336            RecalculateAxesScale(chart.ChartAreas[0]);
337            UpdateYCursorInterval();
338          }
339        }
340      }
341    }
342    private void Points_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
343      if (InvokeRequired)
344        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsRemoved), sender, e);
345      else {
346        ScatterPlotDataRow row = null;
347        pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
348        if (row != null) {
349          Series rowSeries = chart.Series[row.Name];
350          if (!invisibleSeries.Contains(rowSeries)) {
351            rowSeries.Points.Clear();
352            FillSeriesWithRowValues(rowSeries, row);
353            RecalculateMinMaxPointValues();
354            RecalculateAxesScale(chart.ChartAreas[0]);
355            UpdateYCursorInterval();
356          }
357        }
358      }
359    }
360    private void Points_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
361      if (InvokeRequired)
362        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsReplaced), sender, e);
363      else {
364        ScatterPlotDataRow row = null;
365        pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
366        if (row != null) {
367          Series rowSeries = chart.Series[row.Name];
368          if (!invisibleSeries.Contains(rowSeries)) {
369            rowSeries.Points.Clear();
370            FillSeriesWithRowValues(rowSeries, row);
371            RecalculateMinMaxPointValues();
372            RecalculateAxesScale(chart.ChartAreas[0]);
373            UpdateYCursorInterval();
374          }
375        }
376      }
377    }
378    private void Points_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
379      if (InvokeRequired)
380        Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_CollectionReset), sender, e);
381      else {
382        ScatterPlotDataRow row = null;
383        pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
384        if (row != null) {
385          Series rowSeries = chart.Series[row.Name];
386          if (!invisibleSeries.Contains(rowSeries)) {
387            rowSeries.Points.Clear();
388            FillSeriesWithRowValues(rowSeries, row);
389            RecalculateMinMaxPointValues();
390            RecalculateAxesScale(chart.ChartAreas[0]);
391            UpdateYCursorInterval();
392          }
393        }
394      }
395    }
396    #endregion
397    #endregion
398
399    #region Chart Event Handlers
400    private void chart_MouseDown(object sender, MouseEventArgs e) {
401      HitTestResult result = chart.HitTest(e.X, e.Y);
402      if (result.ChartElementType == ChartElementType.LegendItem) {
403        ToggleSeriesVisible(result.Series);
404      }
405    }
406    private void chart_MouseMove(object sender, MouseEventArgs e) {
407      HitTestResult result = chart.HitTest(e.X, e.Y);
408      if (result.ChartElementType == ChartElementType.LegendItem)
409        this.Cursor = Cursors.Hand;
410      else
411        this.Cursor = Cursors.Default;
412    }
413    private void chart_CustomizeLegend(object sender, CustomizeLegendEventArgs e) {
414      foreach (LegendItem legendItem in e.LegendItems) {
415        var series = chart.Series[legendItem.SeriesName];
416        if (series != null) {
417          bool seriesIsInvisible = invisibleSeries.Contains(series);
418          foreach (LegendCell cell in legendItem.Cells) {
419            cell.ForeColor = seriesIsInvisible ? Color.Gray : Color.Black;
420          }
421        }
422      }
423    }
424    #endregion
425
426    private void ToggleSeriesVisible(Series series) {
427      if (!invisibleSeries.Contains(series)) {
428        series.Points.Clear();
429        invisibleSeries.Add(series);
430        RecalculateMinMaxPointValues();
431      } else {
432        invisibleSeries.Remove(series);
433        if (Content != null) {
434
435          var row = (from r in Content.Rows
436                     where r.Name == series.Name
437                     select r).Single();
438          FillSeriesWithRowValues(series, row);
439          RecalculateMinMaxPointValues();
440          this.chart.Legends[series.Legend].ForeColor = Color.Black;
441          RecalculateAxesScale(chart.ChartAreas[0]);
442          UpdateYCursorInterval();
443        }
444      }
445    }
446
447    private void RecalculateMinMaxPointValues() {
448      yMin = xMin = double.MaxValue;
449      yMax = xMax = double.MinValue;
450      foreach (var s in chart.Series.Where(x => x.Enabled)) {
451        foreach (var p in s.Points) {
452          double x = p.XValue, y = p.YValues[0];
453          if (xMin > x) xMin = x;
454          if (xMax < x) xMax = x;
455          if (yMin > y) yMin = y;
456          if (yMax < y) yMax = y;
457        }
458      }
459    }
460
461    private void FillSeriesWithRowValues(Series series, ScatterPlotDataRow row) {
462      for (int i = 0; i < row.Points.Count; i++) {
463        var value = row.Points[i];
464        DataPoint point = new DataPoint();
465        if (IsInvalidValue(value.X) || IsInvalidValue(value.Y))
466          point.IsEmpty = true;
467        else {
468          point.XValue = value.X;
469          point.YValues = new double[] { value.Y };
470        }
471        series.Points.Add(point);
472      }
473    }
474
475    #region Helpers
476    private MarkerStyle ConvertPointStyle(ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle pointStyle) {
477      switch (pointStyle) {
478        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Circle:
479          return MarkerStyle.Circle;
480        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Cross:
481          return MarkerStyle.Cross;
482        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Diamond:
483          return MarkerStyle.Diamond;
484        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Square:
485          return MarkerStyle.Square;
486        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star4:
487          return MarkerStyle.Star4;
488        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star5:
489          return MarkerStyle.Star5;
490        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star6:
491          return MarkerStyle.Star6;
492        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star10:
493          return MarkerStyle.Star10;
494        case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Triangle:
495          return MarkerStyle.Triangle;
496        default:
497          return MarkerStyle.None;
498      }
499    }
500
501    protected static bool IsInvalidValue(double x) {
502      return double.IsNaN(x) || x < (double)decimal.MinValue || x > (double)decimal.MaxValue;
503    }
504    #endregion
505  }
506}
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