isletter

Test whether each character is alphabetic.

Syntax

tf = isletter(A)

Description

Returns a logical array the same size as A, with true at positions where the character is alphabetic (A–Z, a–z, plus locale-specific letters).

Example

isletter('Hi 5!')       % [1 1 0 0 0]

See also

• isspace — Test whether each character is whitespace.
• ischar — Test whether the input is a character array.
• isstrprop — Test whether characters belong to a named character category.