tidyr: uncount – R documentation

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uncount

"Uncount" a data frame

Description

Performs the opposite operation to dplyr::count(), duplicating rows according to a weighting variable (or expression).

Usage

uncount(data, weights, .remove = TRUE, .id = NULL)

Arguments

`data`	A data frame, tibble, or grouped tibble.
`weights`	A vector of weights. Evaluated in the context of `data`; supports quasiquotation.
`.remove`	If `TRUE`, and `weights` is the name of a column in `data`, then this column is removed.
`.id`	Supply a string to create a new variable which gives a unique identifier for each created row.

Examples

df <- tibble(x = c("a", "b"), n = c(1, 2))
uncount(df, n)
uncount(df, n, .id = "id")

# You can also use constants
uncount(df, 2)

# Or expressions
uncount(df, 2 / n)

tidyr

Tidy Messy Data

v1.1.3

MIT + file LICENSE

Authors

Hadley Wickham [aut, cre], RStudio [cph]

Initial release