(P)ercent (Rank)s

Function prank.integer64 projects the values [min..max] via ranks [1..n] to [0..1]. qtile.integer64() is the inverse function of 'prank.integer64' and projects [0..1] to [min..max].

Usage

prank(x, ...)

# S3 method for class 'integer64'
prank(x, method = NULL, ...)

Arguments

x

a integer64 vector

...

ignored

method

NULL for automatic method selection or a suitable low-level method, see details

Value

prank returns a numeric vector of the same length as x.

Details

Function prank.integer64 is based on rank.integer64().

See also

rank.integer64() for simple ranks and qtile() for the inverse function quantiles.

Examples

x <- as.integer64(sample(c(rep(NA, 9), 1:9), 32, TRUE))
prank(x)
#>  [1]         NA         NA 0.22222222 0.83333333 0.05555556 0.97222222
#>  [7]         NA 0.97222222         NA 0.05555556 0.63888889         NA
#> [13] 0.44444444         NA 0.88888889 0.44444444 0.75000000         NA
#> [19] 0.05555556         NA 0.22222222         NA         NA 0.63888889
#> [25] 0.22222222 0.44444444         NA 0.44444444 0.44444444         NA
#> [31] 0.75000000         NA

x <- x[!is.na(x)]
stopifnot(identical(x,  unname(qtile(x, probs=prank(x)))))