Histogram control.
The control displays histograms represented with integer arrays, where each array's element keeps occurrence number of the corresponding element.
Sample usage:
// create array with histogram values int[] histogramValues = new int[] { 3, 8, 53, 57, 79, 69, ... }; // set values to histogram control histogram.Values = histogramValues; Sample control's look:
/// <summary>
/// Displays a histogram.
/// </summary>
///
/// <param name="histogram">The histogram to show.</param>
///
public static HistogramBox Show(Histogram histogram)
{
return(show(histogram));
}
private void onDataBind()
{
samples = null;
if (dataSource == null)
{
return;
}
Histogram source = dataSource as Histogram;
if (source == null)
{
if (histogram == null)
{
histogram = new Histogram();
}
if (dataSource is DataSet)
{
// throw new NotSupportedException();
}
else if (dataSource is DataTable)
{
DataTable table = dataSource as DataTable;
if (dataMember != null && dataMember.Length > 0)
{
if (table.Columns.Contains(dataMember))
{
DataColumn column = table.Columns[dataMember];
samples = Matrix.ToArray(column);
}
else
{
samples = new double[0];
}
}
else
{
return;
}
}
else if (dataSource is double[])
{
samples = dataSource as double[];
}
else if (dataSource is IListSource)
{
// throw new NotSupportedException();
}
else
{
return; // invalid data source
}
if (binWidth != null)
{
this.histogram.Compute(samples, binWidth.Value);
}
else if (numberOfBins != null)
{
this.histogram.Compute(samples, numberOfBins.Value);
}
else
{
this.histogram.Compute(samples);
}
}
else
{
this.histogram = source;
}
this.UpdateTrackbar();
this.UpdateGraph();
if (histogram.Bins.Count > 0 &&
histogram.Bins.Count < trackBar.Maximum)
{
trackBar.Value = histogram.Bins.Count;
}
}
/// <summary>
/// Displays a histogram.
/// </summary>
///
/// <param name="title">The title for the histogram window.</param>
/// <param name="histogram">The histogram to show.</param>
///
public static HistogramBox Show(Histogram histogram, string title = "Histogram")
{
return(show(title, histogram.Values.ToDouble()));
}
//---------------------------------------------
#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)
{
DataTable table = m_dataSource as DataTable;
if (m_dataMember != null && m_dataMember.Length > 0)
{
//m_samples = new SampleVector(((DataTable)m_dataSource).Columns[m_displayMember]);
DataColumn column = table.Columns[m_dataMember];
m_samples = Matrix.ToArray(column);
}
else
{
return;
//m_samples = new SampleVector(((DataTable)m_dataSource).Columns[0]);
}
}
else if (m_dataSource is double[])
{
m_samples = m_dataSource as double[];
}
else if (m_dataSource is IListSource)
{
//m_samples = new SampleVector((IListSource)m_dataSource);
}
else
{
return;
// invalid data source
}
zedGraphControl1.GraphPane.Title.Text = m_histogram.Title;
this.m_histogram.Compute(m_samples);
this.UpdateTrackbar();
this.UpdateGraph();
this.trackBar1.Value = m_histogram.Count;
}
/// <summary>
/// Displays a histogram.
/// </summary>
///
/// <param name="histogram">The histogram to show.</param>
///
public static HistogramBox Show(Histogram histogram)
{
return(show(histogram.Title, histogram.Values.ToDouble()));
}
