eye

Identity matrix

Usages

eye

• It returns 1.

eye(n)

• n should be real non-negative integer.
• It returns the n-by-n identity matrix.
• It does not accept nan nor ±inf as input argument.

eye(m,n)

• m and n should be real non-negative integers, not equal to nan nor ±inf.
• It returns an m-by-n matrix.
• If m < n, the first m columns form an identity matrix, while the last n - m columns contain only zeros.
• If m > n, the first n rows form an identity matrix, while the last m - n rows contain only zeros.

eye([m,n])

• Same as eye(m,n) above.