refactor: Factors, Redux

In jennybc/refactor: Make Factors Less Annoying

Description

Factors, Redux

Usage

refactor(x, levels = NULL, logic = c("freq", "appear"), ...)

Arguments

x	A vector of data.
levels	An optional character vector to be used as the levels. If specified, x, levels, and additional arguments via ... are passed through to factor.
logic	The logical principle by which levels of x should be set. If freq (the default), the levels are in order of decreasing frequency, with ties broken alphabetically. If appear, the levels are in order of appearance.
...	Additional arguments for base::factor(), e.g. ordered.

Value

A factor.

See Also

factor

Examples

set.seed(1)
x <- sample(letters, size = 20, replace = TRUE)

if (requireNamespace("ggplot2")) {
  library(ggplot2)

  ## refactor on-the-fly to get ggplot2 barplot sorted by frequency
  ggplot(data.frame(x = refactor(x)), aes(x)) + geom_bar()

  ## or create the factor explicitly
  xfact <- refactor(x)
  ggplot(data.frame(x = xfact), aes(x)) + geom_bar()

  ## set levels in order of appearance in the data
  xfact_appear <- refactor(x, logic = "appear")
  ggplot(data.frame(x = xfact_appear), aes(x)) + geom_bar()
}

jennybc/refactor documentation built on May 19, 2019, 5:05 a.m.