# isstr

## Purpose

Detect strings.

## Synopsis

    k = isstr(t)

## Description

The statement `t = 'Hello, World`.`'` creates a vector whose components are the ASCII codes for the characters. The column dimension of `t` is the number of characters. It is no different than other MATLAB vectors, except that when displayed, text is shown instead of the decimal ASCII codes.

    t =
        Hello, World.

Associated with each MATLAB variable is a flag that, if set, tells the MATLAB output routines to display the variable as text.

`isstr(t)` returns 1 if the text display flag for `t` is set, and 0 otherwise.

`isstr` also works on matrices.

## Examples

`isstr('Hello')` is 1.

`isstr(abs('Hello'))` is 0.

## See Also

    setstr, strcmp, strings

(c) Copyright 1994 by The MathWorks, Inc.