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Ignore:
Timestamp:
12/02/16 13:06:49 (7 years ago)
Author:
pfleck
Message:

#2713 Moved the charting logic out of DataTableView and ScatterPlotView into new DataTableControl and ScatterPlotControl.
This way, the charts can be reused without the name-textbox and description from the NamedItemView.

File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/sources/HeuristicLab.Analysis.Views/3.3/ScatterPlotView.cs

    r14438 r14439  
    2121
    2222using System;
    23 using System.Collections.Generic;
    24 using System.Drawing;
    25 using System.Linq;
    2623using System.Windows.Forms;
    27 using System.Windows.Forms.DataVisualization.Charting;
    28 using HeuristicLab.Collections;
    29 using HeuristicLab.Common;
    3024using HeuristicLab.Core.Views;
    3125using HeuristicLab.MainForm;
    … …  
    3529  [Content(typeof(ScatterPlot), true)]
    3630  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;
    4031
    4132    public new ScatterPlot Content {
    … …  
    4637    public ScatterPlotView() {
    4738      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       chart.ContextMenuStrip.Items.Add(configureToolStripMenuItem);
    5339    }
    54 
    55     #region Event Handler Registration
    56     protected override void DeregisterContentEvents() {
    57       foreach (ScatterPlotDataRow row in Content.Rows)
    58         DeregisterScatterPlotDataRowEvents(row);
    59       Content.VisualPropertiesChanged -= new EventHandler(Content_VisualPropertiesChanged);
    60       Content.Rows.ItemsAdded -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsAdded);
    61       Content.Rows.ItemsRemoved -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsRemoved);
    62       Content.Rows.ItemsReplaced -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsReplaced);
    63       Content.Rows.CollectionReset -= new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_CollectionReset);
    64       base.DeregisterContentEvents();
    65     }
    66     protected override void RegisterContentEvents() {
    67       base.RegisterContentEvents();
    68       Content.VisualPropertiesChanged += new EventHandler(Content_VisualPropertiesChanged);
    69       Content.Rows.ItemsAdded += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsAdded);
    70       Content.Rows.ItemsRemoved += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsRemoved);
    71       Content.Rows.ItemsReplaced += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsReplaced);
    72       Content.Rows.CollectionReset += new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_CollectionReset);
    73     }
    74 
    75     protected virtual void RegisterScatterPlotDataRowEvents(ScatterPlotDataRow row) {
    76       row.NameChanged += new EventHandler(Row_NameChanged);
    77       row.VisualPropertiesChanged += new EventHandler(Row_VisualPropertiesChanged);
    78       pointsRowsTable.Add(row.Points, row);
    79       row.Points.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsAdded);
    80       row.Points.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsRemoved);
    81       row.Points.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsReplaced);
    82       row.Points.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_CollectionReset);
    83     }
    84     protected virtual void DeregisterScatterPlotDataRowEvents(ScatterPlotDataRow row) {
    85       row.Points.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsAdded);
    86       row.Points.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsRemoved);
    87       row.Points.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsReplaced);
    88       row.Points.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_CollectionReset);
    89       pointsRowsTable.Remove(row.Points);
    90       row.VisualPropertiesChanged -= new EventHandler(Row_VisualPropertiesChanged);
    91       row.NameChanged -= new EventHandler(Row_NameChanged);
    92     }
    93     #endregion
    9440
    9541    protected override void OnContentChanged() {
    9642      base.OnContentChanged();
    97       invisibleSeries.Clear();
    98       chart.Titles[0].Text = string.Empty;
    99       chart.ChartAreas[0].AxisX.Title = string.Empty;
    100       chart.ChartAreas[0].AxisY.Title = string.Empty;
    101       chart.Series.Clear();
    102       if (Content != null) {
    103         chart.Titles[0].Text = Content.Name;
    104         chart.Titles[0].Visible = !string.IsNullOrEmpty(Content.Name);
    105         AddScatterPlotDataRows(Content.Rows);
    106         ConfigureChartArea(chart.ChartAreas[0]);
    107         RecalculateMinMaxPointValues();
    108         RecalculateAxesScale(chart.ChartAreas[0]);
    109       }
     43      chart.Content = Content;
    11044    }
    11145
    … …  
    11650
    11751    public void ShowConfiguration() {
    118       if (Content != null) {
    119         using (ScatterPlotVisualPropertiesDialog dialog = new ScatterPlotVisualPropertiesDialog(Content)) {
    120           dialog.ShowDialog(this);
    121         }
    122       } else MessageBox.Show("Nothing to configure.");
     52      chart.ShowConfiguration();
    12353    }
    12454
    125     protected virtual void AddScatterPlotDataRows(IEnumerable<ScatterPlotDataRow> rows) {
    126       foreach (var row in rows) {
    127         RegisterScatterPlotDataRowEvents(row);
    128         Series series = new Series(row.Name);
    129         if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
    130         else series.LegendText = row.Name;
    131         ConfigureSeries(series, row);
    132         FillSeriesWithRowValues(series, row);
    133         chart.Series.Add(series);
    134       }
    135       ConfigureChartArea(chart.ChartAreas[0]);
    136       RecalculateMinMaxPointValues();
    137       RecalculateAxesScale(chart.ChartAreas[0]);
    138       UpdateYCursorInterval();
    139     }
    140 
    141     protected virtual void RemoveScatterPlotDataRows(IEnumerable<ScatterPlotDataRow> rows) {
    142       foreach (var row in rows) {
    143         DeregisterScatterPlotDataRowEvents(row);
    144         Series series = chart.Series[row.Name];
    145         chart.Series.Remove(series);
    146         if (invisibleSeries.Contains(series))
    147           invisibleSeries.Remove(series);
    148       }
    149       RecalculateMinMaxPointValues();
    150       RecalculateAxesScale(chart.ChartAreas[0]);
    151     }
    152 
    153     private void ConfigureSeries(Series series, ScatterPlotDataRow row) {
    154       series.BorderWidth = 1;
    155       series.BorderDashStyle = ChartDashStyle.Solid;
    156       series.BorderColor = Color.Empty;
    157 
    158       if (row.VisualProperties.Color != Color.Empty)
    159         series.Color = row.VisualProperties.Color;
    160       else series.Color = Color.Empty;
    161       series.IsVisibleInLegend = row.VisualProperties.IsVisibleInLegend;
    162       series.ChartType = SeriesChartType.FastPoint;
    163       series.MarkerSize = row.VisualProperties.PointSize;
    164       series.MarkerStyle = ConvertPointStyle(row.VisualProperties.PointStyle);
    165       series.XAxisType = AxisType.Primary;
    166       series.YAxisType = AxisType.Primary;
    167 
    168       if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
    169       else series.LegendText = row.Name;
    170 
    171       string xAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.XAxisTitle)
    172                       ? "X"
    173                       : Content.VisualProperties.XAxisTitle;
    174       string yAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.YAxisTitle)
    175                             ? "Y"
    176                             : Content.VisualProperties.YAxisTitle;
    177       series.ToolTip =
    178         series.LegendText + Environment.NewLine +
    179         xAxisTitle + " = " + "#VALX," + Environment.NewLine +
    180         yAxisTitle + " = " + "#VAL";
    181     }
    182 
    183     private void ConfigureChartArea(ChartArea area) {
    184       if (Content.VisualProperties.TitleFont != null) chart.Titles[0].Font = Content.VisualProperties.TitleFont;
    185       if (!Content.VisualProperties.TitleColor.IsEmpty) chart.Titles[0].ForeColor = Content.VisualProperties.TitleColor;
    186       chart.Titles[0].Text = Content.VisualProperties.Title;
    187       chart.Titles[0].Visible = !string.IsNullOrEmpty(Content.VisualProperties.Title);
    188 
    189       if (Content.VisualProperties.AxisTitleFont != null) area.AxisX.TitleFont = Content.VisualProperties.AxisTitleFont;
    190       if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisX.TitleForeColor = Content.VisualProperties.AxisTitleColor;
    191       area.AxisX.Title = Content.VisualProperties.XAxisTitle;
    192       area.AxisX.MajorGrid.Enabled = Content.VisualProperties.XAxisGrid;
    193 
    194       if (Content.VisualProperties.AxisTitleFont != null) area.AxisY.TitleFont = Content.VisualProperties.AxisTitleFont;
    195       if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisY.TitleForeColor = Content.VisualProperties.AxisTitleColor;
    196       area.AxisY.Title = Content.VisualProperties.YAxisTitle;
    197       area.AxisY.MajorGrid.Enabled = Content.VisualProperties.YAxisGrid;
    198     }
    199 
    200     private void RecalculateAxesScale(ChartArea area) {
    201       area.AxisX.Minimum = CalculateMinBound(xMin);
    202       area.AxisX.Maximum = CalculateMaxBound(xMax);
    203       if (area.AxisX.Minimum == area.AxisX.Maximum) {
    204         area.AxisX.Minimum = xMin - 0.5;
    205         area.AxisX.Maximum = xMax + 0.5;
    206       }
    207       area.AxisY.Minimum = CalculateMinBound(yMin);
    208       area.AxisY.Maximum = CalculateMaxBound(yMax);
    209       if (area.AxisY.Minimum == area.AxisY.Maximum) {
    210         area.AxisY.Minimum = yMin - 0.5;
    211         area.AxisY.Maximum = yMax + 0.5;
    212       }
    213       if (xMax - xMin > 0) area.CursorX.Interval = Math.Pow(10, Math.Floor(Math.Log10(area.AxisX.Maximum - area.AxisX.Minimum) - 3));
    214       else area.CursorX.Interval = 1;
    215       area.AxisX.IsMarginVisible = false;
    216 
    217       if (!Content.VisualProperties.XAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.XAxisMinimumFixedValue)) area.AxisX.Minimum = Content.VisualProperties.XAxisMinimumFixedValue;
    218       if (!Content.VisualProperties.XAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.XAxisMaximumFixedValue)) area.AxisX.Maximum = Content.VisualProperties.XAxisMaximumFixedValue;
    219       if (!Content.VisualProperties.YAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.YAxisMinimumFixedValue)) area.AxisY.Minimum = Content.VisualProperties.YAxisMinimumFixedValue;
    220       if (!Content.VisualProperties.YAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.YAxisMaximumFixedValue)) area.AxisY.Maximum = Content.VisualProperties.YAxisMaximumFixedValue;
    221     }
    222 
    223     private static double CalculateMinBound(double min) {
    224       if (min == 0) return 0;
    225       var scale = Math.Pow(10, Math.Floor(Math.Log10(Math.Abs(min))));
    226       return scale * (Math.Floor(min / scale));
    227     }
    228 
    229     private static double CalculateMaxBound(double max) {
    230       if (max == 0) return 0;
    231       var scale = Math.Pow(10, Math.Floor(Math.Log10(Math.Abs(max))));
    232       return scale * (Math.Ceiling(max / scale));
    233     }
    234 
    235     protected virtual void UpdateYCursorInterval() {
    236       double interestingValuesRange = (
    237         from series in chart.Series
    238         where series.Enabled
    239         let values = (from point in series.Points
    240                       where !point.IsEmpty
    241                       select point.YValues[0]).DefaultIfEmpty(1.0)
    242         let range = values.Max() - values.Min()
    243         where range > 0.0
    244         select range
    245         ).DefaultIfEmpty(1.0).Min();
    246 
    247       double digits = (int)Math.Log10(interestingValuesRange) - 3;
    248       double yZoomInterval = Math.Pow(10, digits);
    249       this.chart.ChartAreas[0].CursorY.Interval = yZoomInterval;
    250     }
    251 
    252     #region Event Handlers
    25355    #region Content Event Handlers
    25456    protected override void Content_NameChanged(object sender, EventArgs e) {
    … …  
    25658        Invoke(new EventHandler(Content_NameChanged), sender, e);
    25759      else {
    258         chart.Titles[0].Text = Content.Name;
    259         chart.Titles[0].Visible = !string.IsNullOrEmpty(Content.Name);
     60        Content.VisualProperties.Title = Content.Name;
    26061        base.Content_NameChanged(sender, e);
    26162      }
    262     }
    263     private void Content_VisualPropertiesChanged(object sender, EventArgs e) {
    264       if (InvokeRequired)
    265         Invoke(new EventHandler(Content_VisualPropertiesChanged), sender, e);
    266       else {
    267         ConfigureChartArea(chart.ChartAreas[0]);
    268         RecalculateAxesScale(chart.ChartAreas[0]); // axes min/max could have changed
    269       }
    270     }
    271     #endregion
    272     #region Rows Event Handlers
    273     private void Rows_ItemsAdded(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
    274       if (InvokeRequired)
    275         Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsAdded), sender, e);
    276       else {
    277         AddScatterPlotDataRows(e.Items);
    278       }
    279     }
    280     private void Rows_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
    281       if (InvokeRequired)
    282         Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsRemoved), sender, e);
    283       else {
    284         RemoveScatterPlotDataRows(e.Items);
    285       }
    286     }
    287     private void Rows_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
    288       if (InvokeRequired)
    289         Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_ItemsReplaced), sender, e);
    290       else {
    291         RemoveScatterPlotDataRows(e.OldItems);
    292         AddScatterPlotDataRows(e.Items);
    293       }
    294     }
    295     private void Rows_CollectionReset(object sender, CollectionItemsChangedEventArgs<ScatterPlotDataRow> e) {
    296       if (InvokeRequired)
    297         Invoke(new CollectionItemsChangedEventHandler<ScatterPlotDataRow>(Rows_CollectionReset), sender, e);
    298       else {
    299         RemoveScatterPlotDataRows(e.OldItems);
    300         AddScatterPlotDataRows(e.Items);
    301       }
    302     }
    303     #endregion
    304     #region Row Event Handlers
    305     private void Row_VisualPropertiesChanged(object sender, EventArgs e) {
    306       if (InvokeRequired)
    307         Invoke(new EventHandler(Row_VisualPropertiesChanged), sender, e);
    308       else {
    309         ScatterPlotDataRow row = (ScatterPlotDataRow)sender;
    310         Series series = chart.Series[row.Name];
    311         series.Points.Clear();
    312         ConfigureSeries(series, row);
    313         FillSeriesWithRowValues(series, row);
    314         RecalculateMinMaxPointValues();
    315         RecalculateAxesScale(chart.ChartAreas[0]);
    316       }
    317     }
    318     private void Row_NameChanged(object sender, EventArgs e) {
    319       if (InvokeRequired)
    320         Invoke(new EventHandler(Row_NameChanged), sender, e);
    321       else {
    322         ScatterPlotDataRow row = (ScatterPlotDataRow)sender;
    323         chart.Series[row.Name].Name = row.Name;
    324       }
    325     }
    326     #endregion
    327     #region Points Event Handlers
    328     private void Points_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
    329       if (InvokeRequired)
    330         Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsAdded), sender, e);
    331       else {
    332         ScatterPlotDataRow row = null;
    333         pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
    334         if (row != null) {
    335           Series rowSeries = chart.Series[row.Name];
    336           if (!invisibleSeries.Contains(rowSeries)) {
    337             rowSeries.Points.Clear();
    338             FillSeriesWithRowValues(rowSeries, row);
    339             RecalculateMinMaxPointValues();
    340             RecalculateAxesScale(chart.ChartAreas[0]);
    341             UpdateYCursorInterval();
    342           }
    343         }
    344       }
    345     }
    346     private void Points_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
    347       if (InvokeRequired)
    348         Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsRemoved), sender, e);
    349       else {
    350         ScatterPlotDataRow row = null;
    351         pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
    352         if (row != null) {
    353           Series rowSeries = chart.Series[row.Name];
    354           if (!invisibleSeries.Contains(rowSeries)) {
    355             rowSeries.Points.Clear();
    356             FillSeriesWithRowValues(rowSeries, row);
    357             RecalculateMinMaxPointValues();
    358             RecalculateAxesScale(chart.ChartAreas[0]);
    359             UpdateYCursorInterval();
    360           }
    361         }
    362       }
    363     }
    364     private void Points_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
    365       if (InvokeRequired)
    366         Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_ItemsReplaced), sender, e);
    367       else {
    368         ScatterPlotDataRow row = null;
    369         pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
    370         if (row != null) {
    371           Series rowSeries = chart.Series[row.Name];
    372           if (!invisibleSeries.Contains(rowSeries)) {
    373             rowSeries.Points.Clear();
    374             FillSeriesWithRowValues(rowSeries, row);
    375             RecalculateMinMaxPointValues();
    376             RecalculateAxesScale(chart.ChartAreas[0]);
    377             UpdateYCursorInterval();
    378           }
    379         }
    380       }
    381     }
    382     private void Points_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<Point2D<double>>> e) {
    383       if (InvokeRequired)
    384         Invoke(new CollectionItemsChangedEventHandler<IndexedItem<Point2D<double>>>(Points_CollectionReset), sender, e);
    385       else {
    386         ScatterPlotDataRow row = null;
    387         pointsRowsTable.TryGetValue((IObservableList<Point2D<double>>)sender, out row);
    388         if (row != null) {
    389           Series rowSeries = chart.Series[row.Name];
    390           if (!invisibleSeries.Contains(rowSeries)) {
    391             rowSeries.Points.Clear();
    392             FillSeriesWithRowValues(rowSeries, row);
    393             RecalculateMinMaxPointValues();
    394             RecalculateAxesScale(chart.ChartAreas[0]);
    395             UpdateYCursorInterval();
    396           }
    397         }
    398       }
    399     }
    400     #endregion
    401     private void configureToolStripMenuItem_Click(object sender, System.EventArgs e) {
    402       ShowConfiguration();
    403     }
    404     #endregion
    405 
    406     #region Chart Event Handlers
    407     private void chart_MouseDown(object sender, MouseEventArgs e) {
    408       HitTestResult result = chart.HitTest(e.X, e.Y);
    409       if (result.ChartElementType == ChartElementType.LegendItem) {
    410         ToggleSeriesVisible(result.Series);
    411       }
    412     }
    413     private void chart_MouseMove(object sender, MouseEventArgs e) {
    414       HitTestResult result = chart.HitTest(e.X, e.Y);
    415       if (result.ChartElementType == ChartElementType.LegendItem)
    416         this.Cursor = Cursors.Hand;
    417       else
    418         this.Cursor = Cursors.Default;
    419     }
    420     private void chart_CustomizeLegend(object sender, CustomizeLegendEventArgs e) {
    421       foreach (LegendItem legendItem in e.LegendItems) {
    422         var series = chart.Series[legendItem.SeriesName];
    423         if (series != null) {
    424           bool seriesIsInvisible = invisibleSeries.Contains(series);
    425           foreach (LegendCell cell in legendItem.Cells) {
    426             cell.ForeColor = seriesIsInvisible ? Color.Gray : Color.Black;
    427           }
    428         }
    429       }
    430     }
    431     #endregion
    432 
    433     private void ToggleSeriesVisible(Series series) {
    434       if (!invisibleSeries.Contains(series)) {
    435         series.Points.Clear();
    436         invisibleSeries.Add(series);
    437         RecalculateMinMaxPointValues();
    438       } else {
    439         invisibleSeries.Remove(series);
    440         if (Content != null) {
    441 
    442           var row = (from r in Content.Rows
    443                      where r.Name == series.Name
    444                      select r).Single();
    445           FillSeriesWithRowValues(series, row);
    446           RecalculateMinMaxPointValues();
    447           this.chart.Legends[series.Legend].ForeColor = Color.Black;
    448           RecalculateAxesScale(chart.ChartAreas[0]);
    449           UpdateYCursorInterval();
    450         }
    451       }
    452     }
    453 
    454     private void RecalculateMinMaxPointValues() {
    455       yMin = xMin = double.MaxValue;
    456       yMax = xMax = double.MinValue;
    457       foreach (var s in chart.Series.Where(x => x.Enabled)) {
    458         foreach (var p in s.Points) {
    459           double x = p.XValue, y = p.YValues[0];
    460           if (xMin > x) xMin = x;
    461           if (xMax < x) xMax = x;
    462           if (yMin > y) yMin = y;
    463           if (yMax < y) yMax = y;
    464         }
    465       }
    466     }
    467 
    468     private void FillSeriesWithRowValues(Series series, ScatterPlotDataRow row) {
    469       for (int i = 0; i < row.Points.Count; i++) {
    470         var value = row.Points[i];
    471         DataPoint point = new DataPoint();
    472         if (IsInvalidValue(value.X) || IsInvalidValue(value.Y))
    473           point.IsEmpty = true;
    474         else {
    475           point.XValue = value.X;
    476           point.YValues = new double[] { value.Y };
    477         }
    478         series.Points.Add(point);
    479       }
    480     }
    481 
    482     #region Helpers
    483     private MarkerStyle ConvertPointStyle(ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle pointStyle) {
    484       switch (pointStyle) {
    485         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Circle:
    486           return MarkerStyle.Circle;
    487         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Cross:
    488           return MarkerStyle.Cross;
    489         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Diamond:
    490           return MarkerStyle.Diamond;
    491         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Square:
    492           return MarkerStyle.Square;
    493         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star4:
    494           return MarkerStyle.Star4;
    495         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star5:
    496           return MarkerStyle.Star5;
    497         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star6:
    498           return MarkerStyle.Star6;
    499         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Star10:
    500           return MarkerStyle.Star10;
    501         case ScatterPlotDataRowVisualProperties.ScatterPlotDataRowPointStyle.Triangle:
    502           return MarkerStyle.Triangle;
    503         default:
    504           return MarkerStyle.None;
    505       }
    506     }
    507 
    508     protected static bool IsInvalidValue(double x) {
    509       return double.IsNaN(x) || x < (double)decimal.MinValue || x > (double)decimal.MaxValue;
    51063    }
    51164    #endregion
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