This is the default panel function for bwplot
.
panel.bwplot(x, y, box.ratio = 1,
box.width = box.ratio / (1 + box.ratio),
horizontal = TRUE,
pch, col, alpha, cex,
font, fontfamily, fontface,
fill, varwidth = FALSE,
notch = FALSE, notch.frac = 0.5,
...,
levels.fos,
stats = boxplot.stats,
coef = 1.5,
do.out = TRUE,
identifier = "bwplot")
numeric vector or factor. Boxplots drawn for each unique value of
y
(x
) if horizontal
is TRUE
(FALSE
)
ratio of box thickness to inter box space
thickness of box in absolute units; overrides
box.ratio
. Useful for specifying thickness when the
categorical variable is not a factor, as use of box.ratio
alone cannot achieve a thickness greater than 1.
logical. If FALSE, the plot is ‘transposed’ in the sense that
the behaviours of x and y are switched. x is now the
‘factor’. Interpretation of other arguments change
accordingly. See documentation of bwplot
for a fuller
explanation.
graphical
parameters controlling the dot. pch="|"
is treated
specially, by replacing the dot with a line (similar to
boxplot
)
color to fill the boxplot
logical. If TRUE, widths of boxplots are proportional to the number of points used in creating it.
if notch
is TRUE
, a notch is drawn in each
side of the boxes. If the notches of two plots do not overlap this
is ‘strong evidence’ that the two medians differ (Chambers et
al., 1983, p. 62). See boxplot.stats
for the
calculations used.
numeric in (0,1). When notch=TRUE
, the
fraction of the box width that the notches should use.
a function, defaulting to boxplot.stats
,
that accepts a numeric vector and returns a list similar to the
return value of boxplot.stats
. The function must accept
arguments coef
and do.out
even if they do not use
them (a ...
argument is good enough). This function is
used to determine the box and whisker plot.
passed to stats
numeric values corresponding to positions of the factor or shingle variable. For internal use.
further arguments, ignored.
A character string that is prepended to the names of grobs that are created by this panel function.
Deepayan Sarkar Deepayan.Sarkar@R-project.org
Creates Box and Whisker plot of x
for every level of
y
(or the other way round if horizontal=FALSE
). By
default, the actual boxplot statistics are calculated using
boxplot.stats
. Note that most arguments controlling the
display can be supplied to the high-level bwplot
call directly.
Although the graphical parameters for the dot representing the median
can be controlled by optional arguments, many others can not. These
parameters are obtained from the relevant settings parameters
("box.rectangle"
for the box, "box.umbrella"
for the
whiskers and "plot.symbol"
for the outliers).
bwplot
, boxplot.stats
bwplot(voice.part ~ height, data = singer,
xlab = "Height (inches)",
panel = function(...) {
panel.grid(v = -1, h = 0)
panel.bwplot(...)
},
par.settings = list(plot.symbol = list(pch = 4)))
bwplot(voice.part ~ height, data = singer,
xlab = "Height (inches)",
notch = TRUE, pch = "|")
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