[] Sets up plotter environment for simple graphs by calling pladv and setting up viewport and window to sensible default values. plenv leaves enough room around most graphs for axis labels and a title. When these defaults are not suitable, use the individual routines plvspa, plvpor, or plvasp for setting up the viewport, plwind for defining the window, and plbox for drawing the box.
[] xmin (PLFLT, input):[]Value of x at left-hand edge of window.
[] xmax (PLFLT, input):[]Value of x at right-hand edge of window.
[] ymin (PLFLT, input):[]Value of y at bottom edge of window.
[] ymax (PLFLT, input):[]Value of y at top edge of window.
[] just (PLINT, input):[]If just=0, the x and y axes are scaled independently to use as much of the screen as possible, but if just=1, the scales of the x and y axes are made equal.
[] axis (PLINT, input):[]Controls drawing of the box around the plot:
¸plerrx, plerry, plenv, API
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