plsdiori: Set plot orientation

The PLplot Plotting Library: Programmer's Reference Manual
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### `plsdiori`: Set plot orientation

`plsdiori` (rot);

Set plot orientation parameter which is multiplied by 90° to obtain the angle of rotation. Note, arbitrary rotation parameters such as 0.2 (corresponding to 18°) are possible, but the usual values for the rotation parameter are 0., 1., 2., and 3. corresponding to 0° (landscape mode), 90° (portrait mode), 180° (seascape mode), and 270° (upside-down mode). If `plsdiori` is not called the default value of ``rot`` is 0.

`rot` (`PLFLT`, input) Plot orientation parameter.

Redacted form: `plsdiori(rot)`

This function is not used in any examples.

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