Reduce a CIFTI file along a dimension — cifti

Wraps wb_command -cifti-reduce to perform a reduction operation (e.g. mean, stdev) along a specified direction.

Usage

cifti_reduce(
  cifti_in,
  direction = c("ROW", "COLUMN"),
  operation = "MEAN",
  cifti_out,
  only_numeric = FALSE,
  verbose = get_wb_verbosity()
)

Arguments

cifti_in: Path to the input CIFTI file.
direction: Direction to reduce. One of "ROW" or "COLUMN".
operation: Reduction operation. One of "MAX", "MIN", "INDEXMAX", "INDEXMIN", "SUM", "PRODUCT", "MEAN", "STDEV", "SAMPSTDEV", "VARIANCE", "TSNR", "COV", "L2NORM", "MEDIAN", "MODE", "COUNT_NONZERO".
cifti_out: Path for the output CIFTI file.
only_numeric: Logical; exclude non-numeric values?
verbose: Logical; print command output?

Value

The result of the underlying wb_cmd() call.

Examples

if (FALSE) { # \dontrun{
cifti_reduce(
  "data.dtseries.nii",
  direction = "ROW",
  operation = "MEAN",
  cifti_out = "mean.dscalar.nii"
)
} # }