MATLAB Function Reference

isnumeric - Determine whether input is numeric array

Syntax

tf = isnumeric(A)

Description

tf = isnumeric(A) returns logical 1 (true) if A is a numeric array and logical 0 (false) otherwise. For example, sparse arrays and double-precision arrays are numeric, while strings, cell arrays, and structure arrays and logicals are not.

Examples

Given the following cell array,

C{1,1} = pi;                 % double
C{1,2} = 'John Doe';         % char array
C{1,3} = 2 + 4i;             % complex double
C{1,4} = ispc;               % logical
C{1,5} = magic(3)            % double array

C = 
   [3.1416] 'John Doe' [2.0000+ 4.0000i] [1][3x3 double]

isnumeric shows that all but C{1,2} and C{1,4} are numeric arrays.

for k = 1:5
x(k) = isnumeric(C{1,k});
end

x
x =
     1     0     1     0     1

See Also

isstrprop, isnan, isreal, isprime, isfinite, isinf, isa, is*

isnan

isobject