Add proportions by group

add_proportion(
  x,
  y,
  ...,
  name = "p",
  percent_format = FALSE,
  percent_accuracy = 0.01
)

Arguments

x	A data frame, data frame extension (e.g. a tibble), or a lazy data frame (e.g. from dbplyr or dtplyr).
y	Variable to calculate proportions from.
...	<`data-masking`> Variables to group by.
name	The name of the new column in the output. If omitted, it will default to `n`. If there's already a column called `n`, it will error, and require you to specify the name.
percent_format	A logical. If `TRUE`, transform the numeric decimal into a readable percent of class character as a new column; `{name}_format`. If this parameter is missing it will default to the last column of the dataset passed in.
percent_accuracy	A numeric. If `percent_format` is `TRUE`, number to round the decimal to. Uses `scales::percent()` accuracy method for transformations.

Value

An object of the same type as x. The output has the same groups as the input.

Examples

mtcars %>%
  dplyr::count(cyl) %>%
  add_proportion(n)
#> # A tibble: 3 x 3
#>     cyl     n     p
#>   <dbl> <int> <dbl>
#> 1     4    11 0.344
#> 2     6     7 0.219
#> 3     8    14 0.438