protected override Series CreateGraph(ISignal signal)
{
var ret = new LineSeries();
var fsignal = signal as IFiniteSignal;
var esignal = signal as IEnumerableSignal;
var ssignal = signal as ISyntheticSignal;
int winstart;
int winlength;
WindowModes winmode;
WindowTypes wintype;
if (fsignal != null)
{
winmode = this.FiniteWindowMode;
wintype = this.FiniteWindowType;
if (this.FiniteMode == FiniteModes.Fixed)
{
winstart = this.FiniteFixedStart;
winlength = this.FiniteFixedLength;
}
else if (this.FiniteMode == FiniteModes.Regular)
{
winstart = fsignal.Start;
winlength = fsignal.Length;
}
else if (this.FiniteMode == FiniteModes.Oversampled)
{
winstart = fsignal.Start;
winlength = fsignal.Length * this.FiniteOversampling;
}
else if (this.FiniteMode == FiniteModes.View)
{
winstart = this.ViewStart;
winlength = this.ViewLength;
}
else
{
throw new ArgumentOutOfRangeException();
}
}
else if (esignal != null)
{
winmode = this.EnumerableWindowMode;
wintype = this.EnumerableWindowType;
if (this.EnumerableMode == EnumerableModes.Fixed)
{
winstart = this.EnumerableFixedStart;
winlength = this.EnumerableFixedLength;
}
else if (this.EnumerableMode == EnumerableModes.View)
{
winstart = this.ViewStart;
winlength = this.ViewLength;
}
else
{
throw new ArgumentOutOfRangeException();
}
}
else if (ssignal != null)
{
winmode = this.SyntheticWindowMode;
wintype = this.SyntheticWindowType;
if (this.SyntheticMode == SyntheticModes.Ideal)
{
ret.Points.AddRange(this.GetYValues(ssignal.Spectrum).Zip(ssignal.Spectrum.Frequencies.Values, (m, f) => new DataPoint(f, m)));
return(ret);
}
if (this.SyntheticMode == SyntheticModes.Fixed)
{
winstart = this.SyntheticFixedStart;
winlength = this.SyntheticFixedLength;
}
else if (this.SyntheticMode == SyntheticModes.View)
{
winstart = this.ViewStart;
winlength = this.ViewLength;
}
else if (this.SyntheticMode == SyntheticModes.FixedSymmetric)
{
winstart = -(this.SyntheticFixedSymmetricLength >> 1);
winlength = this.SyntheticFixedSymmetricLength;
}
else
{
throw new ArgumentOutOfRangeException();
}
}
else
{
winmode = this.InfiniteWindowMode;
wintype = this.InfiniteWindowType;
if (this.InfiniteMode == InfiniteModes.Fixed)
{
winstart = this.InfiniteFixedStart;
winlength = this.InfiniteFixedLength;
}
else if (this.InfiniteMode == InfiniteModes.View)
{
winstart = this.ViewStart;
winlength = this.ViewLength;
}
else if (this.InfiniteMode == InfiniteModes.FixedSymmetric)
{
winstart = -(this.InfiniteFixedSymmetricLength >> 1);
winlength = this.InfiniteFixedSymmetricLength;
}
else
{
throw new ArgumentOutOfRangeException();
}
}
var win = new Window(wintype, winstart, winlength, signal.SampleRate, winmode);
var winsignal = signal.Multiply(win);
var frequencies = winsignal.Spectrum.Frequencies.Values.ToReadOnlyList();
var values = this.GetYValues(winsignal.Spectrum).ToReadOnlyList();
if (this.CustomResulutionEnabled)
{
if (this.CustomFrequencies == null)
{
this.CustomFrequencies = new UniformSeries(this.StartFrequency, this.StopFrequency, this.NumberOfPoints, this.Logarithmic);
}
var fnew = this.CustomFrequencies.Values.ToReadOnlyList();
values = Dsp.AdaptiveInterpolation(frequencies, values, fnew, this.Logarithmic).ToReadOnlyList();
frequencies = fnew;
}
if (this.Smoothing > 0)
{
values = Dsp.Smooth(frequencies, values, this.Smoothing, this.Logarithmic).ToReadOnlyList();
}
ret.Points.AddRange(values.Zip(frequencies, (m, f) => new DataPoint(f, m)));
return(ret);
}