//---------------------------------------------
#region Constructor
public DataHistogramView()
{
InitializeComponent();
m_histogram = new Histogram();
m_graphBars = new ZedGraph.BarItem(String.Empty);
m_graphBars.Color = Color.DarkBlue;
zedGraphControl1.GraphPane.Title.FontSpec.IsBold = true;
zedGraphControl1.GraphPane.Title.FontSpec.Size = 32f;
zedGraphControl1.GraphPane.Title.IsVisible = true;
zedGraphControl1.GraphPane.XAxis.Type = AxisType.Text;
zedGraphControl1.GraphPane.XAxis.Title.IsVisible = false;
zedGraphControl1.GraphPane.XAxis.MinSpace = 0;
zedGraphControl1.GraphPane.XAxis.MajorGrid.IsVisible = false;
zedGraphControl1.GraphPane.XAxis.MinorGrid.IsVisible = false;
zedGraphControl1.GraphPane.XAxis.MajorTic.IsBetweenLabels = true;
zedGraphControl1.GraphPane.XAxis.MajorTic.IsInside = false;
zedGraphControl1.GraphPane.XAxis.MajorTic.IsOpposite = false;
zedGraphControl1.GraphPane.XAxis.MinorTic.IsAllTics = false;
zedGraphControl1.GraphPane.XAxis.Scale.FontSpec.IsBold = true;
zedGraphControl1.GraphPane.XAxis.Scale.FontSpec.IsAntiAlias = true;
zedGraphControl1.GraphPane.YAxis.MinorTic.IsAllTics = false;
zedGraphControl1.GraphPane.YAxis.MajorTic.IsOpposite = false;
zedGraphControl1.GraphPane.YAxis.Title.Text = "Frequency";
zedGraphControl1.GraphPane.YAxis.Title.FontSpec.Size = 24f;
zedGraphControl1.GraphPane.YAxis.Title.FontSpec.IsBold = true;
zedGraphControl1.GraphPane.Border.IsVisible = false;
zedGraphControl1.GraphPane.BarSettings.MinBarGap = 0;
zedGraphControl1.GraphPane.BarSettings.MinClusterGap = 0;
zedGraphControl1.GraphPane.CurveList.Add(m_graphBars);
}
public static double Entropy(params int[] values)
{
Visualizations.Histogram histogram;
histogram = new Visualizations.Histogram();
histogram.Compute(values, 1.0);
return(Visualizations.Histogram.Measures.Entropy(histogram.Values));
}
//---------------------------------------------
#region Private Members
private void OnDataBind()
{
if (m_dataSource == null)
{
return;
}
if (m_histogram == null)
{
m_histogram = new Histogram();
}
if (m_dataSource is DataSet)
{
if (m_dataMember != null && m_dataMember.Length > 0)
{
if (m_displayMember != null && m_displayMember.Length > 0)
{
m_samples = new SampleVector(((DataSet)m_dataSource).Tables[m_dataMember].Columns[m_displayMember]);
}
else
{
m_samples = new SampleVector(((DataSet)m_dataSource).Tables[m_dataMember].Columns[0]);
}
}
else
{
m_samples = new SampleVector(((DataSet)m_dataSource).Tables[0].Columns[0]);
}
}
else if (m_dataSource is DataTable)
{
if (m_dataMember != null && m_dataMember.Length > 0)
{
m_samples = new SampleVector(((DataTable)m_dataSource).Columns[m_displayMember]);
}
else
{
m_samples = new SampleVector(((DataTable)m_dataSource).Columns[0]);
}
}
else if (m_dataSource is SampleVector)
{
m_samples = m_dataSource as SampleVector;
}
else if (m_dataSource is IListSource)
{
m_samples = new SampleVector((IListSource)m_dataSource);
}
else
{
// invalid data source
}
zedGraphControl1.GraphPane.Title.Text = m_samples.Name;
this.m_histogram.Compute(m_samples, Histogram.SelectionRule.Scotts);
this.UpdateTrackbar();
this.UpdateGraph();
this.trackBar1.Value = m_histogram.Count;
}
internal HistogramBin(Histogram histogram, int index)
{
this.m_index = index;
this.m_histogram = histogram;
}