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(P)ercent (Rank)s

Source: R/highlevel64.R
prank.Rd

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] 0.70833333 0.45833333         NA         NA         NA         NA
#>  [7]         NA         NA         NA 1.00000000         NA 0.45833333
#> [13]         NA         NA         NA 0.25000000 0.70833333 0.70833333
#> [19] 0.25000000 0.70833333         NA         NA 0.91666667         NA
#> [25] 0.00000000 0.25000000         NA         NA         NA         NA
#> [31] 0.08333333         NA

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