The PLplot Plotting Library: Programmer's Reference Manual
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plgspa: Get current subpage parameters

plgspa (xmin, xmax, ymin, ymax);

Gets the size of the current subpage in millimeters measured from the bottom left hand corner of the output device page or screen. Can be used in conjunction with plsvpa for setting the size of a viewport in absolute coordinates (millimeters).

xmin (PLFLT *, output)

Pointer to variable with position of left hand edge of subpage in millimeters.

xmax (PLFLT *, output)

Pointer to variable with position of right hand edge of subpage in millimeters.

ymin (PLFLT *, output)

Pointer to variable with position of bottom edge of subpage in millimeters.

ymax (PLFLT *, output)

Pointer to variable with position of top edge of subpage in millimeters.

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plgra: Switch to graphics screenUpplgstrm: Get current stream number