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Set axis limits and aspect ratios

`axis(limits)`

`axis style`

`axis mode`

`axis ydirection`

`axis visibility`

`lim = axis`

```
[m,v,d]
= axis('state')
```

`___ = axis(ax,___)`

`axis `

uses a
predefined style to set the limits and scaling. For example, specify
the style as `style`

`equal`

to use equal data unit lengths
along each axis.

`axis `

sets whether MATLAB`mode`

^{®} automatically
chooses the limits or not. Specify the mode as `manual`

, `auto`

,
or one of the semiautomatic options, such as `'auto x'`

.

`axis `

, where `ydirection`

`ydirection`

is `ij`

,
places the origin at the upper left corner of the axes. The *y* values
increase from top to bottom. The default for `ydirection`

is `xy`

,
which places the origin at the lower left corner. The *y* values
increase from bottom to top.

`axis `

, where `visibility`

`visibility`

is `off`

,
turns off the display of the axes background. Plots in the axes still
display. The default for `visibility`

is `on`

,
which displays the axes background.

returns
the `lim`

= axis*x*-axis and *y*-axis limits
for the current axes. For 3-D axes, it also returns the *z*-axis
limits. For polar axes, it returns the *theta*-axis
and *r*-axis limits.

If axes do not exist, the

`axis`

function creates them.Use

`hold on`

to keep plotting functions from overriding preset axis limits.

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