dt_nest {tidyfast} | R Documentation |
Fast Nesting
Description
Quickly nest data tables (similar to dplyr::group_nest()
).
Usage
dt_nest(dt_, ..., .key = "data")
Arguments
dt_ |
the data table to nest |
... |
the variables to group by |
.key |
the name of the list column; default is "data" |
Value
A data.table with a list column containing data.tables
Examples
library(data.table)
dt <- data.table(
x = rnorm(1e5),
y = runif(1e5),
grp = sample(1L:3L, 1e5, replace = TRUE)
)
dt_nest(dt, grp)
[Package tidyfast version 0.4.0 Index]