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

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

revdiag(x,...)
offdiag(x,type=0,...)

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

Arguments

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

Author

Klaus K. Holst