Signal processing

PreProcessingTools

Signal pre-processing: GeometryProcessor, PreProcessSignals, SignalPlot.

Importing external measurement data

The desktop GUI’s File > Import Signals… action (PreProcessSignalsGUI) opens either a pyOMA state file (.npz, as written by save_state()) or a bare .npy array of shape (n_samples, n_channels) — for the latter you are prompted for the sampling rate, since a plain array carries no such metadata.

For measurement formats other than .npy/.npz, scripts/converters/ contains small, self-contained example scripts to copy and adapt — each one reads a specific file format and writes a .npz in the same schema PreProcessSignals.load_state() expects, so the result loads directly via the GUI’s “Import Signals” action or in a script. These are not a claim of broad format support; they are a starting point — add an adapter for your own DAQ export by copying the closest script.

Script	Format
csv_converter.py	Delimited ASCII/CSV (via pandas)
mat_converter.py	MATLAB .mat (via scipy.io)
wav_converter.py	.wav (via scipy.io.wavfile)
tdms_converter.py	National Instruments .tdms (via nptdms, optional dependency)