eye - Identity matrix
Syntax
Y = eye(n)
Y = eye(m,n)
Y
= eye([m n])
Y = eye(size(A))
Y = eye(m, n, classname)
Description
Y = eye(n) returns
the n-by-n identity matrix.
Y = eye(m,n) or Y
= eye([m n]) returns
an m-by-n matrix with 1's
on the diagonal and 0's elsewhere. The size inputs m and n should
be nonnegative integers. Negative integers are treated as 0.
Y = eye(size(A)) returns
an identity matrix the same size as A.
Y = eye(m, n, classname) is
an m-by-n matrix
with 1's of class classname on the diagonal
and zeros of class classname elsewhere. classname is
a string specifying the data type of the output. classname can
take the following values: 'double', 'single', 'int8', 'uint8', 'int16', 'uint16', 'int32', 'uint32', 'int64',
or 'uint64'.
The identity matrix is not defined for higher-dimensional arrays.
The assignment y = eye([2,3,4]) results in an error.
Examples
Return a 2-by-3 matrix of class int8:
x = eye(2,3,'int8');
See Also
magic | ones | zeros
 | export2wsdlg | | ezcontour |  |
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