NAME

       plbox - Draw a box with axes, etc

SYNOPSIS

       plbox(xopt, xtick, nxsub, yopt, ytick, nysub)

DESCRIPTION

       Draws a box around the currently defined viewport, and labels it with world coordinate values appropriate
       to the window.  Thus plbox(3plplot) should only be called after defining both viewport and  window.   The
       ascii  character  strings xopt and yopt specify how the box should be drawn as described below.  If ticks
       and/or subticks are to be drawn for a particular axis, the tick intervals and number of subintervals  may
       be specified explicitly, or they may be defaulted by setting the appropriate arguments to zero.

       Redacted form: General: plbox(xopt, xtick, nxsub, yopt, ytick, nysub)

       This function is used in examples 1, 2, 4, 6, 6-12, 14-18, 21, 23-26, and 29.

ARGUMENTS

       xopt (PLCHAR_VECTOR(3plplot), input)
              An  ascii  character  string  specifying  options  for  the  x  axis.   The string can include any
              combination of the following letters (upper or lower case) in any order: a: Draws axis, X-axis  is
              horizontal line (y=0), and Y-axis is vertical line (x=0).  b: Draws bottom (X) or left (Y) edge of
              frame.  c: Draws top (X) or right (Y) edge of frame.  d: Plot labels as date /  time.  Values  are
              assumed  to  be  seconds  since the epoch (as used by gmtime).  f:  Always use fixed point numeric
              labels.  g: Draws a grid at the major tick interval.  h: Draws a grid at the minor tick  interval.
              i:  Inverts  tick  marks,  so  they  are  drawn  outwards,  rather  than  inwards.  l: Labels axis
              logarithmically.  This only affects the labels, not the data, and so it is  necessary  to  compute
              the  logarithms  of  data  points  before  passing them to any of the drawing routines.  m: Writes
              numeric labels at major tick intervals in the unconventional location (above box for X,  right  of
              box  for Y).  n: Writes numeric labels at major tick intervals in the conventional location (below
              box for X, left of box for Y).  o: Use custom labelling function to generate axis label text.  The
              custom  labelling  function  can  be  defined  with the plslabelfunc(3plplot) command.  s: Enables
              subticks between major ticks, only valid if t is  also  specified.   t:  Draws  major  ticks.   u:
              Exactly  like  "b"  except don't draw edge line.  w: Exactly like "c" except don't draw edge line.
              x: Exactly like "t" (including the side effect of the numerical labels for the major ticks) except
              exclude drawing the major and minor tick marks.

       xtick (PLFLT(3plplot), input)
              World  coordinate  interval  between  major  ticks  on  the  x  axis. If it is set to zero, PLplot
              automatically generates a suitable tick interval.

       nxsub (PLINT(3plplot), input)
              Number of subintervals between major x axis ticks for minor ticks.  If it is set to  zero,  PLplot
              automatically generates a suitable minor tick interval.

       yopt (PLCHAR_VECTOR(3plplot), input)
              An  ascii  character  string  specifying  options  for  the  y  axis.   The string can include any
              combination of the letters defined above for xopt, and in addition may contain: v:  Write  numeric
              labels for the y axis parallel to the base of the graph, rather than parallel to the axis.

       ytick (PLFLT(3plplot), input)
              World  coordinate  interval  between  major  ticks  on  the  y  axis. If it is set to zero, PLplot
              automatically generates a suitable tick interval.

       nysub (PLINT(3plplot), input)
              Number of subintervals between major y axis ticks for minor ticks.  If it is set to  zero,  PLplot
              automatically generates a suitable minor tick interval.

AUTHORS

       Many  developers  (who are credited at http://plplot.org/credits.php) have contributed to PLplot over its
       long history.

SEE ALSO

       PLplot documentation at http://plplot.org/documentation.php.

                                                  October, 2024                                   PLBOX(3plplot)