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# DIN Paper formats
#' The DIN A paper formats
#' @name dina
NULL
#' @rdname dina
#' @return A named list (0-10) of named vectors (long, short) of unit objects with the size in inches of the DIN A paper formats
#' @seealso \link[grid]{unit}
#' @export
dinAFormat <- function()
{
list(
"0"=c(long=46.81, short=33.11),
"1"=c(long=33.11, short=23.39),
"2"=c(long=23.39, short=16.54),
"3"=c(long=16.54, short=11.69),
"4"=c(long=11.69, short=8.27),
"5"=c(long=8.27, short=5.83),
"6"=c(long=5.83, short=4.13),
"7"=c(long=4.13, short=2.91),
"8"=c(long=2.91, short=2.05),
"9"=c(long=2.05, short=1.46),
"10"=c(long=1.46, short=1.02)
)
}
#' @rdname dina
#' @export
dinA_format <- dinAFormat
#' @rdname dina
#' @param n DIN A paper format index (0-10)
#'
#' @return named unit vector (long, short) with the size in inches of the requested DIN A paper format
#' @export
dinA <- function(n)
{
if (n < 0 || n > 10)
stop("DIN A ", n, ": value not defined")
dinAFormat()[[n+1]]
}
#' @rdname dina
#' @return the long side / width in landscape as a unit object in inches
#' @export
dinAWidth <- function(n)
{
return(dinA(n)[1])
}
#' @rdname dina
#' @export
dinA_width <- dinAWidth
#' @rdname dina
#' @return the short side / height in landscape as a unit object in inches
#' @export
dinAHeight <- function(n)
{
return(dinA(n)[2])
}
#' @rdname dina
#' @export
dinA_height <- dinAHeight
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