Split Iterator — isplit • iterors

Returns an iterator that divides the data in the vector x into the groups defined by f.

Usage

isplit(x, f, drop = FALSE, ...)

Arguments

x: vector or data frame of values to be split into groups.
f: a factor or list of factors used to categorize x.
drop: logical indicating if levels that do not occur should be dropped.
...: current ignored.

Value

The split iterator.

Details

Originally from the iterators package.

See also

Examples


x <- rnorm(200)
f <- factor(sample(1:10, length(x), replace = TRUE))

it <- isplit(x, f)
expected <- split(x, f)

for (i in expected) {
    actual <- nextOr(it, break)
    stopifnot(actual$value == i)
}