Get number of channels
References
Oostenveld R, Fries P, Maris E, Schoffelen JM (2011). "FieldTrip: Open source software for advanced analysis of MEG, EEG, and invasive electrophysiological data." Computational Intelligence and Neuroscience, 2011, 156869.
See also
channelNames for channel labels,
channelInfo for full channel metadata,
pickChannels for subsetting channels
Examples
pe <- PhysioExperiment(
assays = list(raw = matrix(rnorm(400), nrow = 100, ncol = 4)),
samplingRate = 100
)
nChannels(pe) # 4
#> [1] 4