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Pick specific channels

Source: R/channels.R
pickChannels.Rd

Creates a new PhysioExperiment with only selected channels.

Usage

pickChannels(x, channels)

Arguments

x

A PhysioExperiment object.

channels

Integer indices or character names of channels to keep.

Value

A new PhysioExperiment with selected 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

dropChannels for removing channels, getChannelsByType for finding channels by type, channelNames for available channel labels

Examples

pe <- PhysioExperiment(
  assays = list(raw = matrix(rnorm(400), nrow = 100, ncol = 4)),
  colData = S4Vectors::DataFrame(label = c("Fz", "Cz", "Pz", "Oz")),
  samplingRate = 100
)

# Pick by index
pe_subset <- pickChannels(pe, c(1, 3))
nChannels(pe_subset)  # 2
#> [1] 2

# Pick by name
pe_frontal <- pickChannels(pe, c("Fz", "Cz"))