isplit: Split Iterator
In iterators: Provides Iterator Construct

Description Usage Arguments Value See Also Examples

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

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

`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.

The split iterator.

split

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 <- nextElem(it)
  stopifnot(actual$value == i)
}