MATLAB Function Reference

isnumeric

Determine if item is a numeric array

Syntax

• tf = isnumeric(A)
  

Description

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

Examples

Given the following cell array,

• C{1,1} = pi;
  C{1,2} = 'John Doe';
  C{1,3} = 2 + 4i;
  C{1,4} = ispc;
  C{1,5} = magic(3)
  
  C = 
  
      [3.1416]   'John Doe'   [2.0000+ 4.0000i]   [1]   [3x3 double]
  

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

• for k = 1:5
  x(k) = isnumeric(C{1,k});
  end
  
  x
  
  x =
  
       1     0     1     0     1
  

See Also
isnan, isreal, isprime, isfinite, isinf, isa, is*

isnan

isobject