/// <summary>
/// Выполнение сегментации исходного сигнала
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ButtonGetQstSegments_Click(object sender, EventArgs e)
{
if (qstNoizebleSignalPoints == null || qstNoizebleSignalPoints.Count() == 0)
{
MessageBox.Show("Выполните зашумление исходного сигнала", "Ошибка!");
return;
}
Meta.Numerics.Statistics.BivariateSample bevar = new Meta.Numerics.Statistics.BivariateSample();
Dictionary <string, SignalUtilities.SegmentBounds> bounds = new Dictionary <string, SignalUtilities.SegmentBounds>();
int discfrecuency = int.Parse(textBoxQstDiscFr.Text);
foreach (var segment in qstSignal)
{
var segmentPoins = DigitalSignalsGenerator.GetHarmonicSignal(segment.Harmonics, discfrecuency, segment.Time);
var segmentBounds = SignalUtilities.GetSegment(qstNoizebleSignalPoints, segmentPoins);
bounds.Add(segment.Name, segmentBounds);
}
DrawSegmentsAttributes(bounds, chartQstSignal);
}
/// <summary>
/// Вычисление нижнего и верхнего индексов сегмента в основном сигнале
/// </summary>
/// <param name="mainSignal"></param>
/// <param name="segment"></param>
/// <returns></returns>
public static SegmentBounds GetSegment(double[] mainSignal, double[] segment)
{
int min, max;
int step = segment.Length;
double[] cutted;
List <double> coeffs = new List <double>();
Meta.Numerics.Statistics.BivariateSample bevar = new Meta.Numerics.Statistics.BivariateSample();
for (int i = 0, j = step; j < mainSignal.Length; i++, j++)
{
cutted = mainSignal.Skip(i).Take(step).ToArray();
bevar.Clear();
bevar.Add(cutted, segment);
coeffs.Add(bevar.PearsonRTest().Statistic.Value);
}
max = coeffs.IndexOf(coeffs.Max()) + step;
min = coeffs.IndexOf(coeffs.Max());
return(new SegmentBounds(min, max));
}
