nest: Nest and unnest

In hope-data-science/tidydt: Tidy Verbs for 'data.table'

Description

Analogous function for nest and unnest in tidyr

Usage

nest_dt(data, ...)

unnest_dt(data, col)

Arguments

data	data.table, nested or unnested
...	The variable for nest group
col	The variable of nested data to be unnest

Details

In the nest_dt, the data would be nested to a column named 'ndt', which is short for nested data.table.

Value

data.table, nested or unnested

References

https://www.r-bloggers.com/much-faster-unnesting-with-data-table/

https://stackoverflow.com/questions/25430986/create-nested-data-tables-by-collapsing-rows-into-new-data-tables

See Also

nest

Examples

iris %>% nest_dt(Species) -> nested_iris
nested_iris

nested_iris %>% unnest_dt(ndt) -> unnested_iris
unnested_iris

hope-data-science/tidydt documentation built on Feb. 21, 2020, 10:25 a.m.