ISDIGIT Test for Digit Characters in a String

Section: String Functions

Usage

The isdigit functions returns a logical array that is 1 for characters in the argument string that are digits, and is a logical 0 for characters in the argument that are not digits. The syntax for its use is 
   x = isdigit(s)

where s is a string.

Example

A simple example of isdigit: 
--> isdigit('numb3r5')

ans = 
 0 0 0 0 1 0 1