stm_toeplitz() generates a Toeplitz matrix from two vectors. A
Toeplitz matrix is a matrix where each descending diagonal from left to
right is constant.
Usage
stm_toeplitz(vec1, vec2 = vec1)
Arguments
- vec1
A numeric vector to form the first column of the matrix.
- vec2
A numeric vector to form the first row of the matrix. If
not specified, defaults to vec1.
Value
A matrix of size length(vec1) x length(vec2)
with the structure of a Toeplitz matrix.
Details
The function checks that the two vectors have the same length.
It then constructs a matrix where the first column is vec1
and the first row is vec2. Subsequent rows are filled
following the Toeplitz matrix structure.
Examples
x <- c(1, 2, 3)
y <- c(1, 5, 6, 7)
stm_toeplitz(x, y)
#> [,1] [,2] [,3] [,4]
#> [1,] 1 5 6 7
#> [2,] 2 1 5 6
#> [3,] 3 2 1 5