isplitIndices: Create an iterator of indices

In itertools: Iterator Tools

Description

Create an iterator of chunks of indices from 1 to n. You can specify either the number of pieces, using the chunks argument, or the maximum size of the pieces, using the chunkSize argument.

Usage

isplitIndices(n, ...)

Arguments

n	Maximum index to generate.
...	Passed as the second and subsequent arguments to idiv function. Currently, idiv accepts either a value for chunks or chunkSize.

Value

An iterator that returns vectors of indices from 1 to n.

See Also

idiv, isplitVector

Examples

# Return indices from 1 to 17 in vectors no longer than five
it <- ihasNext(isplitIndices(17, chunkSize=5))
while (hasNext(it)) {
  print(nextElem(it))
}

# Return indices from 1 to 7 in four vectors
it <- ihasNext(isplitIndices(7, chunks=4))
while (hasNext(it)) {
  print(nextElem(it))
}

Example output

Loading required package: iterators
[1] 1 2 3 4 5
[1] 6 7 8 9
[1] 10 11 12 13
[1] 14 15 16 17
[1] 1 2
[1] 3 4
[1] 5 6
[1] 7

itertools documentation built on May 2, 2019, 6:16 p.m.