eye — identity matrix
X=eye(m,n) X=eye(A) X=eye()
according to its arguments defines an m
xn
matrix with 1 along the
main diagonal or an identity matrix of the same dimension as A
.
Caution: eye(10)
is interpreted as eye(A)
with A=10
i.e. 1
.
(It is NOT a ten by ten identity matrix!).
If A
is a linear system represented by a syslin
list, eye(A)
returns an eye
matrix of appropriate dimension:
(number of outputs x number of inputs).
eye()
produces a identity matrix with undefined
dimensions. Dimensions will be defined when this identity matrix is
added to a mtrix with fixed dimensions.