Percent label formatter

Returns a function that turns numbers into percent strings, e.g. 42 becomes "42%". The input is assumed to already be on a 0-100 scale (as produced by calc_percentage()), not a 0-1 proportion.

Usage

label_pct(digits = 0, suffix = "%")

Arguments

digits

Number of decimal places to keep. Defaults to 0.

suffix

String appended after the number. Defaults to "%".

Value

A function suitable for the labels argument of a ggplot2 scale or for use with geom_text().

Details

label_pct() returns a function (a closure), not formatted strings – this is the form ggplot2 scales expect for their labels argument. The number is rounded to digits decimal places with formatC() and suffix appended. Because the input is assumed to be on a 0–100 scale, label_pct()(42) is "42%", not "4200%".

See also

scale_y_pct().

Other scales: nice_max(), scale_y_pct()

Examples

f <- label_pct()
f(c(0, 33.4, 100))
#> [1] "0%"   "33%"  "100%"

label_pct(1)(33.45)
#> [1] "33.5%"