sidSpectrumPlot¶

Python equivalent: sid.spectrum_plot

Power spectrum plot with confidence bands.

sidSpectrumPlot(result)
sidSpectrumPlot(result, 'Confidence', 3)
h = sidSpectrumPlot(...)

Plots the noise spectrum (or output spectrum in time-series mode) in dB with shaded confidence bands (default: +/-3sigma).

Inputs¶

Name	Description
`result`	FreqResult struct (see sidResultTypes §1). Required fields: .NoiseSpectrum, .Frequency, .FrequencyHz, .SampleTime Optional fields: .NoiseSpectrumStd (for confidence bands)

Name	Description
`'Confidence'`	Number of standard deviations. Default: 3.
`'FrequencyUnit'`	'rad/s' (default) or 'Hz'.
`'Color'`	Line color. Default: [0.850 0.325 0.098].
`'LineWidth'`	Line width. Default: 1.5.
`'Axes'`	Axes handle. Creates new figure if empty.

Name	Description
`h`	Struct with fields .fig, .ax, .line.

y = randn(500, 1);
result = sidFreqBT(y, []);
sidSpectrumPlot(result, 'Confidence', 3);

(Spectrum plotting — not yet in SPEC.md)