isnumeric
Check if an array contains only numeric elements and only numbers can be asigned as its elements.
(u)=isnumeric(a)
Inputs
a Any array.
Outputs
u true (1) if all the input is a numeric array and only numbers can be assigned as its elements , and false (0) otherwise.


Example
>>a=rand(4,4)
>>isnumeric(a)
         1
>>// Non-numeric elements may be assigned to cell arrays.
>>isnumeric({1,3,4})
         0