itertools (version 0.1-3)

isplitCols: Create an iterator that splits a matrix into block columns

Description

Create an iterator that splits a matrix into block columns. You can specify either the number of blocks, using the chunks argument, or the maximum size of the blocks, using the chunkSize argument.

Usage

isplitCols(x, ...)

Arguments

x

Matrix to iterate over.

...

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 submatrices of x.

See Also

idiv, isplitRows

Examples

# Split a matrix into submatrices with a maximum of three columns
x <- matrix(1:30, 3)
it <- ihasNext(isplitCols(x, chunkSize=3))
while (hasNext(it)) {
  print(nextElem(it))
}

# Split the same matrix into five submatrices
it <- ihasNext(isplitCols(x, chunks=5))
while (hasNext(it)) {
  print(nextElem(it))
}