gastropy.plot_psd

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gastropy.plot_psd#

gastropy.plot_psd(freqs, psd, band=None, ax=None, ch_names=None, best_idx=None, peak_freq=None)[source]#

Plot power spectral density with gastric band shading.

Supports single-channel (1D psd) or multi-channel (2D psd) overlays with automatic channel coloring.

Parameters:

  • freqs (array_like) – Frequency values in Hz.

  • psd (array_like) – PSD values. Shape (n_freqs,) for single channel or (n_channels, n_freqs) for multi-channel.

  • band (GastricBand, optional) – Band to shade. Default is NORMOGASTRIA.

  • ax (matplotlib.axes.Axes, optional) – Axes to plot on. If None, creates a new figure.

  • ch_names (list of str, optional) – Channel labels for the legend (multi-channel only).

  • best_idx (int, optional) – Index of the best channel to highlight with a thicker line.

  • peak_freq (float, optional) – Frequency of the peak to mark with a star.

Returns:

  • fig (matplotlib.figure.Figure)

  • ax (matplotlib.axes.Axes)

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