Handle NA values in signal data

Provides various strategies for handling NA values in signal data.

Usage

handleNA(
  x,
  method = c("interpolate", "omit", "zero", "mean", "locf", "none"),
  ...
)

Arguments

x

Numeric vector or matrix.

method

Method for handling NA: "omit" (remove), "interpolate" (linear), "zero" (replace with 0), "mean" (replace with mean), "locf" (last observation carried forward), or "none" (no action).

...

Additional arguments passed to interpolation methods.

Value

Data with NA values handled according to the specified method.

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

replaceNA for handling NA in PhysioExperiment assays, fillEdgeNA for edge-specific NA filling, checkNA for NA validation

Examples

x <- c(1, NA, 3, NA, 5)

# Linear interpolation
handleNA(x, method = "interpolate")
#> [1] 1 2 3 4 5

# Replace with mean
handleNA(x, method = "mean")
#> [1] 1 3 3 3 5

# Last observation carried forward
handleNA(x, method = "locf")
#> [1] 1 1 3 3 5