ne

 ~=  Not equal.
    A ~= B does element by element comparisons between A and B and returns
    an array with elements set to logical 1 (TRUE) where the relation is
    true and elements set to logical 0 (FALSE) where it is not. A and B
    must have compatible sizes. In the simplest cases, they can be the same
    size or one can be a scalar. Two inputs have compatible sizes if, for
    every dimension, the dimension sizes of the inputs are either the same
    or one of them is 1.

    C = NE(A,B) is called for the syntax 'A ~= B' when A or B is an object.

    See <a href="matlab:helpview('matlab','MATLAB_OPS')">MATLAB Operators and Special Characters</a> for more details.

    Documentation for struct/ne
       doc struct/ne