plvasp.3plplot man page
plvasp — Specify viewport using aspect ratio only
Selects the largest viewport with the given aspect ratio within the subpage that leaves a standard margin (left-hand margin of eight character heights, and a margin around the other three sides of five character heights).
Redacted form: plvasp(aspect)
This function is used in example 13.
- aspect (PLFLT(3plplot), input)
Ratio of length of y axis to length of x axis of resulting viewport.
Many developers (who are credited at http://plplot.sourceforge.net/credits.php) have contributed to PLplot over its long history.
PLplot documentation at http://plplot.sourceforge.net/documentation.php.