The PLplot Plotting Library: Programmer's Reference Manual
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### `plsdidev`: Set parameters that define current device-space window

`plsdidev` (mar, aspect, jx, jy);

Set relative margin width, aspect ratio, and relative justification that define current device-space window. If you want to just use the previous value for any of these, just pass in the magic value PL_NOTSET. It is unlikely that one should ever need to change the aspect ratio but it's in there for completeness. If `plsdidev` is not called the default values of ``mar``, ``jx``, and ``jy`` are all 0. ``aspect`` is set to a device-specific value.

`mar` (`PLFLT`, input) Relative margin width. `aspect` (`PLFLT`, input) Aspect ratio. `jx` (`PLFLT`, input) Relative justification in x. `jy` (`PLFLT`, input) Relative justification in y.

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`plsdev`: Set the device (keyword) name | Up | `plsdimap`: Set up transformation from metafile coordinates