The special keyword `matlab:`

lets you embed
commands in other functions. Most commonly, the functions that contain
it display hyperlinks, which execute the commands when you click the
hyperlink text. Functions that support `matlab:`

syntax
include `disp`

, `error`

, `fprintf`

, `help`

, and `warning`

.

Use `matlab:`

syntax to create a hyperlink
in the Command Window that runs one or more functions. For example,
you can use `disp`

to display the word Hypotenuse
as an executable hyperlink as follows:

disp('<a href="matlab:a=3; b=4;c=hypot(a,b)">Hypotenuse</a>')

`matlab:`

,
resulting inc = 5

`a`

, `b`

, and `c`

in
the base workspace.The argument to `disp`

is an ```
<a
href>
```

HTML hyperlink. Include the full hypertext string,
from `'<a href=`

to `</a>'`

within
a single line, that is, do not continue a long string on a new line.
No spaces are allowed after the opening `<`

and
before the closing `>`

. A single space is required
between `a`

and `href`

.

You cannot directly execute `matlab:`

syntax.
That is, if you type

matlab:a=3; b=4;c=hypot(a,b)

??? matlab:a=3; b=4;c=hypot(a,b) | Error: The expression to the left of the equals sign is not a valid target for an assignment.

You do not need to use `matlab:`

to display
a live hyperlink to the Web. For example, if you want to link to an
external Web page, you can use `disp`

, as follows:

disp('<a href="http://en.wikipedia.org/wiki/Hypotenuse">Hypotenuse</a>')

Using `matlab:`

, you can:

Use `matlab:`

to run a specified statement
when you click a hyperlink in the Command Window. For example, run
this command:

disp('<a href="matlab:magic(4)">Generate magic square</a>')

It displays this link in the Command Window:

When you click the link, MATLAB runs `magic(4)`

.

You can run multiple functions with a single link. For example, run this command:

disp('<a href="matlab: x=0:1:8;y=sin(x);plot(x,y)">Plot x,y</a>')

It displays this link in the Command Window:

When you click the link, MATLAB runs this code:

x = 0:1:8; y = sin(x); plot(x,y)

Redefine `x`

in the base workspace:

x = -2*pi:pi/16:2*pi;

Click the hyperlink, `Plot x,y`

again and it
changes the current value of `x`

back to `0:1:8`

.
The code that `matlab:`

runs when you click the ```
Plot
x,y
```

defines `x`

in the base workspace.

Use multiple `matlab:`

statements in a file
to present options, such as

disp('<a href = "matlab:state = 0">Disable feature</a>') disp('<a href = "matlab:state = 1">Enable feature</a>')

The Command Window displays the links that follow. Depending
on which link you click, MATLAB sets `state`

to `0`

or `1`

.

MATLAB correctly interprets most strings that include special
characters, such as a greater than symbol (`>`

).
For example, the following statement includes a greater than symbol
(`>`

).

disp('<a href="matlab:str = ''Value > 0''">Positive</a>')

and generates the following hyperlink.

Some symbols might not be interpreted correctly and you might need to use the ASCII value for the symbol. For example, an alternative way to run the previous statement is to use ASCII 62 instead of the greater than symbol:

disp('<a href="matlab:str=[''Value '' char(62) '' 0'']">Positive</a>')

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