Diag {pracma} | R Documentation |
Matrix Diagonal
Description
Generate diagonal matrices or return diagonal of a matrix
Usage
Diag(x, k = 0)
Arguments
x |
vector or matrix |
k |
integer indicating a secondary diagonal |
Details
If x
is a vector, Diag(x, k)
generates a matrix with x
as the (k-th secondary) diagonal.
If x
is a matrix, Diag(x, k)
returns the (k
-th secondary) diagonal of x
.
The k
-th secondary diagonal is above the main diagonal for k > 0
and below the main diagonal for k < 0
.
Value
matrix or vector
Note
In Matlab/Octave this function is called diag()
and has a different
signature than the corresponding function in R.
See Also
Examples
Diag(matrix(1:12,3,4), 1)
Diag(matrix(1:12,3,4), -1)
Diag(c(1,5,9), 1)
Diag(c(1,5,9), -1)
[Package pracma version 2.4.4 Index]