k = isletter('str')
isletter('str')
str
s = 'A1,B2,C3'; isletter(s) ans = 1 0 0 1 0 0 1 0
s = 'A1,B2,C3';
isletter(s)
ans =
1 0 0 1 0 0 1 0
isstr
(c) Copyright 1994 by The MathWorks, Inc.