Create/extract 'reverse'-diagonal matrix or off-diagonal elements

revdiag(x,...) offdiag(x,type=0,...) revdiag(x,...) <- value offdiag(x,type=0,...) <- value

x | vector |
---|---|

... | additional arguments to lower level functions |

value | For the assignment function the values to put in the diagonal |

type | 0: upper and lower triangular, 1: upper triangular, 2: lower triangular, 3: upper triangular + diagonal, 4: lower triangular + diagonal |

Klaus K. Holst