plbox
( | xopt, |
xtick, | |
nxsub, | |
yopt, | |
ytick, | |
nysub) ; |
Draws a box around the currently defined viewport, and labels it with
world coordinate values appropriate to the window. Thus plbox
should only be called after defining both viewport and window. The
ascii character strings
and
xopt
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.
yopt
xopt
(PLCHAR_VECTOR
, 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
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
, 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
, 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
, input)
An ascii character string specifying options for the y
axis. The string can include any combination of the letters
defined above for
, and in addition
may contain:
xopt
v
: Write numeric labels for the y
axis parallel to the base of the graph, rather than
parallel to the axis.
ytick
(PLFLT
, 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
, 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.
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.