Generates all different subsets of size *r* chosen from *n*
different elements.

1 | ```
subsets(n, r, v = 1:n)
``` |

`n` |
numeric. Number of elements to choose from. |

`r` |
numeric. Size of the subsets. |

`v` |
vector. Numeric or character vector of size |

A matrix of dimension (*N x r*), where *N* is
the total number of different combinations of *r* elements chosen
from *n* possible.

This particular version of the function was taken from a message from Bill Venables to ‘r-help’ list on Sun, 17 Dec 2000.

Bill Venables Bill.Venables@cmis.csiro.au

Venables, Bill. "Programmers Note", R-News, Vol 1/1, Jan. 2001. http://cran.r-project.org/doc/Rnews

`combinations`

of the gtools package.

1 2 3 4 |

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