R: Create matrix with choose(n,m) unique rows with m ones in...

chooseMatrix {perm} | R Documentation

## Create matrix with choose(n,m) unique rows with m ones in each row the rest 0.

### Description

Create a `choose(n,m)` by n matrix. The matrix has unique rows with m ones in each row and the rest zeros.

### Usage

    chooseMatrix(n, m)

### Arguments

`n` | an integer
`m` | an integer<=n

### Value

A matrix with choose(n,m) rows n columns. The matrix has unique rows with m ones in each row and the rest zeros.

### Note

Used for complete enumeration when method='exact.ce' in `permTS`

### Author(s)

M.P.Fay

### See Also

`permTS`

### Examples

    chooseMatrix(5,2)

[Package perm version 1.0-0.0 Index]