isletter

Determine which characters are letters in Stateflow chart

Since R2021b

Syntax

tf = isletter(str)

Description

tf = isletter(str) returns a Boolean array based on whether each character of str is a letter or not.

Note

The isletter operator is not supported in Stateflow^® charts that use C as the action language.

Examples

Determine Which Characters of a String Are Letters

Create a Boolean vector of the form [1 1 1 1 1 0 0 1 1 1 1 1 0].

str = "Hello, world!";
X = isletter(str);

Input Arguments

str — Input string

string scalar

Input string, specified as a string scalar. Enclose literal strings with double quotes.

Example: "Hello"

Limitations

• This operator does not support the use of Stateflow structure fields or messages. For more information about structures in Stateflow, see Access Bus Signals.

Version History

Introduced in R2021b