isletter

check that characters of a string are alphabetics letters

Calling Sequence

res = isletter(str)

Arguments

: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 check that characters of a string are alphanumerics
• isdigit check that characters of a string are digits between 0 and 9