| MATLAB Functions | Help Desk |
eye
Identity matrix
Y = eye(n) Y = eye(m,n) Y = eye(size(A))
Y = eye(n)
returns the n-by-n identity matrix.
Y = eye(m,n) or eye([m n])
returns an m-by-n matrix with 1's on the diagonal and 0's elsewhere.
Y = eye(size(A))
returns an identity matrix the same size as A.
The identity matrix is not defined for higher-dimensional arrays. The assignment y = eye([2,3,4]) results in an error.
ones Create an array of all ones
rand Uniformly distributed random numbers and arrays
randn Normally distributed random numbers and arrays
zeros Create an array of all zeros