Nest data.tables
Nest data.tables by group
nest_by.(.df, ..., .key = "data", .keep = FALSE)
.df |
A data.frame or data.table |
... |
Columns to group by. If empty nests the entire data.table.
|
.key |
Name of the new column created by nesting. |
.keep |
Should the grouping columns be kept in the list column. |
test_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))
)
test_df %>%
nest_by.()
test_df %>%
nest_by.(c, d)
test_df %>%
nest_by.(where(is.character))
test_df %>%
nest_by.(c, d, .keep = TRUE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.