nest_by: Nest data.tables

In mtfairbanks/gdt: Tidy Interface to 'data.table'

Nest data.tables

Description

Nest data.tables by group.

Note: nest_by() does not return a rowwise tidytable.

Usage

nest_by(.df, ..., .key = "data", .keep = FALSE)

Arguments

.df	A data.frame or data.table
...	Columns to group by. If empty nests the entire data.table. tidyselect compatible.
.key	Name of the new column created by nesting.
.keep	Should the grouping columns be kept in the list column.

Examples

df <- data.table(
  a = 1:5,
  b = 6:10,
  c = c(rep("a", 3), rep("b", 2)),
  d = c(rep("a", 3), rep("b", 2))
)

df %>%
  nest_by()

df %>%
  nest_by(c, d)

df %>%
  nest_by(where(is.character))

df %>%
  nest_by(c, d, .keep = TRUE)

mtfairbanks/gdt documentation built on June 10, 2025, 6:13 p.m.