Generate Toeplitz matrix from column and row vector.
vector that will be the first column
vector that if present will form the first row.
Toeplitz(a, b) returns a (non-symmetric) Toeplitz matrix whose
first column is
a and whose first row is
b. The following
rows are shifted to the left.
If the first element of
b differs from the last element of
it is overwritten by this one (and a warning sent).
Matrix of size
stats::Toeplitz does not allow to specify the row vector, that is
returns only the symmetric Toeplitz matrix.