isletter

Returns a boolean, logical matrix or cell array, whose value(s) are true if the corresponding elements of the input are letters and false, if otherwise.

Syntax

R = isletter(s)

Inputs

s: Type: Any finite scalar | string | mat | cell

Outputs

R: Type: logical | mat | cell

Examples

String input:

R = isletter('test123')

R = [Matrix] 1 x 7
1  1  1  1  0  0  0

Cell array input:

R = isletter({23, 'test123'})

R =
{
[1,1] 0
[1,2] [Matrix] 1 x 7
1  1  1  1  0  0  0
}