Name

isletter — check that characters of a string are alphabetics letters

Calling Sequence

res = isletter(str)

Parameters

str

A character string.

res

A boolean matrix.

Description

res = isletter(str) returns an array the same size as str containing logical %t (true) where the elements of str are letters of the alphabet and logical %f (false) where they are not.

Examples

 
s = 'A1,B2,C3';
isletter(s)
 

See Also

isalphanum , isdigit