Create a 2-by-2 matrix. Determine whether it is a scalar.

A = [1 2; 3 4];
TF = isscalar(A)

TF = logical
   0

Check whether the element at the first row and second column of the matrix is a scalar.

TF = isscalar(A(1,2))

TF = logical
   1

Create a string scalar by enclosing a piece of text in double quotes. Determine whether it is a scalar.

A = "Hello, World!";
TF = isscalar(A)

TF = logical
   1

Now create a character vector by enclosing a piece of text in single quotes. Determine whether it is a scalar.

B = 'Hello, World!';
TF = isscalar(B)

TF = logical
   0

Check the dimension of B using size. B is not a scalar since it has a size of 1-by-13.

sz = size(B)

sz = 1×2

     1    13