R/miscellaneous.R

In neuroconductor-releases/oro.nifti: Rigorous - 'NIfTI' + 'ANALYZE' + 'AFNI' : Input / Output

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## Copyright (c) 2009, Brandon Whitcher and Volker Schmid
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#' Dimension Accessor Functions
#' 
#' Functions to extract the higher dimensions from ANALYZE/NIfTI data.
#' 
#' Simple calls to \code{dim} to replicate the functionality of \code{nrow} and
#' \code{ncol} for higher dimensions of an array that are commonly required
#' when manipulating medical imaging data.
#' 
#' @aliases nsli NSLI ntim NTIM
#' @param x is a three- or four-dimensional array (e.g., read in from an
#' ANALYZE/NIfTI file).
#' @return Third (slice) or fourth (time) dimension of the array.
#' @author Brandon Whitcher \email{bwhitcher@@gmail.com}
#' @seealso \code{\link{readNIfTI}}, \code{\link{readANALYZE}}
#' @rdname miscellaneous
#' @keywords misc
#' @export
nsli <- function(x) {
  dim(x)[3]
}
#' @rdname miscellaneous
#' @export
NSLI <- function(x) {
  dim(x)[3]
}
#' @rdname miscellaneous
#' @export
ntim <- function(x) {
  dim(x)[4]
}
#' @rdname miscellaneous
#' @export
NTIM <- function(x) {
  dim(x)[4]
}