Nothing
#' Make a template \code{"xifti"} object
#'
#' Make a \code{"xifti"} object with all terminal entries \code{NULL}. Useful for
#' seeing the structure of a \code{"xifti"} object or creating a new one.
#'
#' Additional metadata depends on the type of CIFTI file:
#'
#' \describe{
#' \item{"dtseries"}{
#' \describe{
#' \item{time_start:}{ Start time}
#' \item{time_step:}{ The TR}
#' \item{time_unit:}{ Unit of time}
#' }
#' }
#' \item{"dscalar"}{
#' \describe{
#' \item{names:}{ Name of each data column}
#' }
#' }
#' \item{"dlabels"}{
#' \describe{
#' \item{names:}{ Name of each data column}
#' \item{labels:}{
#' Length \eqn{T} list of \eqn{L \times 5} data.frames. List entry
#' names are data column names. Row names are label names.
#' Column names are: Key, Red, Green, Blue, and Alpha.
#' }
#' }
#' }
#' }
#'
#'
#' @return An empty \code{"xifti"} object with a valid list structure
#'
#' @keywords internal
#'
template_xifti <- function(){
xifti <- list(
data = list(
cortex_left = NULL,
cortex_right = NULL,
subcort = NULL
),
surf = list(
cortex_left = NULL,
cortex_right = NULL
),
meta = list(
cortex = list(
medial_wall_mask = list(
left = NULL,
right = NULL
),
resamp_res = NULL
),
subcort = list(
labels = NULL,
mask = NULL,
trans_mat = NULL,
trans_units = NULL
),
cifti = list(
intent = NULL,
brainstructures = NULL
)
)
)
structure(xifti, class="xifti")
}
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