heatR: Heatmaps for correlation matrices

#' 25 Personality items representing 5 factors
#'
#' 25 personality self report items taken from the International Personality
#' Item Pool (ipip.ori.org) were included as part of the Synthetic Aperture
#' Personality Assessment (SAPA) web based personality assessment project.
#'
#' @format The data from 2800 subjects.
#'
#' \describe{
#'   \item{A1:}{Am indifferent to the feelings of others. (q_146)}
#'   \item{A2:}{Inquire about others' well-being. (q_1162)}
#'   \item{A3:}{Know how to comfort others. (q_1206)}
#'   \item{A4:}{Love children. (q_1364)}
#'   \item{A5:}{Make people feel at ease. (q_1419)}
#'   \item{C1:}{Am exacting in my work. (q_124)}
#'   \item{C2:}{Continue until everything is perfect. (q_530)}
#'   \item{C3:}{Do things according to a plan. (q_619)}
#'   \item{C4:}{Do things in a half-way manner. (q_626)}
#'   \item{C5:}{Waste my time. (q_1949)}
#'   \item{E1:}{Don't talk a lot. (q_712)}
#'   \item{E2:}{Find it difficult to approach others. (q_901)}
#'   \item{E3:}{Know how to captivate people. (q_1205)}
#'   \item{E4:}{Make friends easily. (q_1410)}
#'   \item{E5:}{Take charge. (q_1768)}
#'   \item{N1:}{Get angry easily. (q_952)}
#'   \item{N2:}{Get irritated easily. (q_974)}
#'   \item{N3:}{Have frequent mood swings. (q_1099)}
#'   \item{N4:}{Often feel blue. (q_1479)}
#'   \item{N5:}{Panic easily. (q_1505)}
#'   \item{O1:}{Am full of ideas. (q_128)}
#'   \item{O2:}{Avoid difficult reading material.(q_316)}
#'   \item{O3:}{Carry the conversation to a higher level. (q_492)}
#'   \item{O4:}{Spend time reflecting on things. (q_1738)}
#'   \item{O5:}{Will not probe deeply into a subject. (q_1964)}
#' }
#'
#' @details This is the same as the bfi in the psych package, except with
#'   reverse coded items reversed as they would need to be for scoring purposes.
#'   I also drop the demographic variables.
#'
#' @seealso \code{\link[psych]{bfi}}

#' @examples
#' library(heatR)
#' data(bfi)
#' summary(bfi)
#'
"bfi"