MATLAB Function Reference

isletter

Detect array elements that are letters of the alphabet

Syntax

• tf = isletter('str')
  

Description

tf = isletter('str') returns an array the same size as str containing logical true (1) where the elements of str are letters of the alphabet and logical false (0) where they are not.

Examples

• s = 'A1,B2,C3';
  
  isletter(s)
  
  ans =
  
       1     0     0     1     0     0     1     0
  

See Also
char, ischar, isspace, isa, is*

iskeyword

islogical