label4MRI: MRI-labeling

#' @title
#' label4MRI: label human brain MRI image by AAL/BA system
#' @description
#' The goal is to facilitate brain coordinate labeling.
#' This is essential for big data processing when dealing with a huge number of
#' brian coordinates. \cr
#'
#' Key functions:
#' \itemize{
#' \item \code{\link{mni_to_region_name}}
#'   \itemize{
#'   \item Input an MNI coordinate, output the corresponding AAL
#'     (Automated Anatomical Labeling) and BA (Brodmann area) brain region name.
#'   \item More importantly, if the coordinate does not match a brain region defined
#'     by AAL/BA (e.g., white matter), the package help find the
#'     closest brain region along with the corresponding distance.
#'   }
#' \item \code{\link{region_name_to_mni}}
#'   \itemize{
#'   \item Input a brain region name, output the MNI coordinates within it.
#'   }
#' \item \code{\link{list_brain_regions}}
#'   \itemize{
#'   \item List the brain regions defined by each labeling system.
#'   }
#' \item \code{\link{show_cluster_composition}}
#'   \itemize{
#'   \item Show brain cluster composition (i.e., percentage of each brain region
#'    within it).
#'   }
#' }
#'
#' @author
#' \strong{Main Author and Maintainer}: Chuang, Yun-Shiuan (Sean) \email{yunshiuan.chuang@@gmail.com} \cr
#'
#' Other contributors:
#' \itemize{
#' \item Losses Don
#' }
#' @seealso
#' Github : \link{https://github.com/yunshiuan/label4MRI} \cr
#' Report bugs or comments at \link{https://github.com/yunshiuan/label4MRI/issues}
#'
#' @docType package
#' @name label4MRI
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