Main Content

isletter

Determine which characters are letters in Stateflow chart

Since R2021b

Description

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

example

Note

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

Examples

expand all

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);

Stateflow chart that uses the isletter operator in a state.

Input Arguments

expand all

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

Go to top of page