sdynpy.fileio.sdynpy_rattlesnake.read_random_spectral_data

• Module: sdynpy.fileio.sdynpy_rattlesnake

• Source: GitHub

Signature¶

def sdynpy.fileio.sdynpy_rattlesnake.read_random_spectral_data(file, coordinate_override_column=None)

Read random-vibration spectral data from a Rattlesnake nc4 file.

Reads the response CPSD, specification CPSD, and drive CPSD arrays that are written to disk while a Rattlesnake Random environment is running (i.e. during active control, not from a system-identification run). Applies response and reference transformation matrices when present.

Parameters¶

• file : str or netCDF4.Dataset Path to a Rattlesnake nc4 file, or an already-open netCDF4.Dataset.

• coordinate_override_column : str, optional Name of a channel-table column whose string values are parsed as coordinates. When None (default) coordinates are assembled from the node_number and node_direction channel-table columns.

Returns¶

• response_cpsd : PowerSpectralDensityArray Measured response cross-power spectral density matrix.

• spec_cpsd : PowerSpectralDensityArray Specification (target) cross-power spectral density matrix.

• drive_cpsd : PowerSpectralDensityArray Drive (output) cross-power spectral density matrix.