Label strings by wrapping across multiple lines

Uses strwrap() to split long labels across multiple lines.

label_wrap(width)

wrap_format(width)

Arguments

width	Number of characters per line.

Value

All label_() functions return a "labelling" function, i.e. a function that takes a vector x and returns a character vector of length(x) giving a label for each input value.

Labelling functions are designed to be used with the labels argument of ggplot2 scales. The examples demonstrate their use with x scales, but they work similarly for all scales, including those that generate legends rather than axes.

Old interface

wrap_format() is retired; please use label_format() instead.

See also

Other labels for discrete scales: label_parse()

Examples

x <- c(
  "this is a long label",
  "this is another long label",
  "this a label this is even longer"
)
demo_discrete(x)
#> scale_x_discrete()
demo_discrete(x, labels = label_wrap(10))
#> scale_x_discrete(labels = label_wrap(10))
demo_discrete(x, labels = label_wrap(20))
#> scale_x_discrete(labels = label_wrap(20))