ismatrix1

Work-around for error in built-in function ismatrix (2010b). Only returns 1 for matrices

Description

Built-in function ismatrix() (2010b) returns 1 for scalars, vectors, strings, and empty variables, as well as for matrices.

ismatrix1() corrects it to return 1 only for matrices.
It returns 0 for for scalars, vectors, strings, and empty variables.

ismatrix1_test gives examples of using ismatrix and ismatrix1() on scalars, vectors, strings, and matrices.

• MATLAB release: MATLAB 7.11 (2010b)

[Cris Luengo]

ismatrix does what the documentation says it does. It seems to not do what you want it to do. I don't see how that's an error.
"ismatrix(V) returns logical 1 (true) if size(V) returns [m n] with nonnegative integer values m and n, and logical 0 (false) otherwise."