isletter (MATLAB Functions)

Detect array elements that are letters of alphabet

Note Use the isstrprop function in place of isletter. The isletter function will be removed in a future version of MATLAB.

Syntax

```
tf = isletter('str')
```

Description

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

Examples

Find the letters in character array s.

s = 'A1, B2, C3';

isletter(s)
ans =
     1     0     0     1     0     0     1     0

See Also

isstrprop, isnumeric, ischar, char, isspace, isa, is*

iskeyword islogical