tidytable (version 0.8.0)

unnest.: Unnest list-columns

Description

Unnest list-columns.

Usage

unnest.(
  .df,
  ...,
  keep_empty = FALSE,
  .drop = TRUE,
  names_sep = NULL,
  names_repair = "unique"
)

Arguments

.df

A data.table

...

Columns to unnest. If empty, unnests all list columns. tidyselect compatible.

keep_empty

Return NA for any NULL elements of the list column

.drop

Should list columns that were not unnested be dropped

names_sep

If NULL, the default, the inner column names will become the new outer column names.

If a string, the name of the outer column will be appended to the beginning of the inner column names, with names_sep used as a separator.

names_repair

Treatment of duplicate names. See ?vctrs::vec_as_names for options/details.

Examples

nested_df <-
  data.table(
    a = 1:10,
    b = 11:20,
    c = c(rep("a", 6), rep("b", 4)),
    d = c(rep("a", 4), rep("b", 6))
  ) %>%
  nest_by.(c, d) %>%
  mutate.(pulled_vec = map.(data, ~ pull.(.x, a)))

nested_df %>%
  unnest.(data)

nested_df %>%
  unnest.(data, names_sep = "_")

nested_df %>%
  unnest.(data, pulled_vec)