demo (MATLAB Functions)

Access product demos via Help browser

Graphical Interface

As an alternative to the demo function, you can select Help -> Demos from the MATLAB desktop, or click the Demos tab when the Help browser is open.

Syntax

demo
demo subtopic
demo subtopic category
demo('subtopic', 'category')

Description

demo opens the Demos panel in the Help browser. In the left pane, expand the listing for a product area (for example, MATLAB). Within that product area, expand the listing for a product or product category (for example, MATLAB Graphics). Select a specific demo from the list (for example, Visualizing Sound). In the right pane, view instructions for using the demo. For more information, see the topic Demos in the Help Browser in the MATLAB Desktop Tools and Development Environment documentation. To run a demo from the command line, type the demo name. For published M-file demos, that is those demos in which the H1 line begins with two comment symbols (%%), type playshow followed by the demo name to run it.

demo subtopic opens the Demos panel in the Help browser with the specified subtopic expanded. Subtopics are matlab, toolbox, simulink, and blockset.

demo subtopic category opens the Demos panel in the Help browser to the specified product or category within the subtopic. The demo function uses the full name displayed in the Demo panel for category.

demo('subtopic', 'category') is the function form of the syntax. Use this form when category is more than one word.

Examples

Accessing Toolbox Demos

To find the demos relating to the Communications Toolbox, type

```
demo toolbox communications
```

The Help browser opens to the Demos panel with the Toolbox subtopic expanded and with the Communications product highlighted and expanded to show the available demos.

Accessing Simulink Demos

To access the demos within Simulink, type

```
demo simulink automotive
```

The Demos panel opens with the Simulink subtopic and Automotive category expanded.

Function Form of demo

To access the Simulink Report Generator demos, run

demo('simulink', 'simulink report generator')

which displays

Running a Demo from the Command Line

Type

```
vibes
```

to run a visualization demonstration showing an animated L-shaped membrane.

Running a Published M-File Demo from the Command Line

Type

```
quake
```

to run an earthquake data demo. Not much appears to happen. This is because quake is a published M-file demo. Verify this by viewing the M-file, quake.m, for example, by typing

```
edit quake
```

The first line, that is, the H1 line for quake, is

```
%% Loma Prieta Earthquake
```

The %% indicates that quake is a published M-file demo. So to run it, type

```
playshow quake
```

and the earthquake demo runs.

See Also

grabcode, help, helpbrowser, helpwin, lookfor, playshow

delete (timer) depdir