Spot operator: opEye Spot Home Page
opEye
 opEye  Identity operator.
 
    opEye(M) creates the M-by-M identity operator.
 
    opEye(M,N) creates the M-by-N identity operator. If N is omitted
    it is set to M by default. Without any arguments an operator
    corresponding to the scalar 1 is created.
 
    opEye([M N]) is the same as the above.