bxp {base} | R Documentation |
bxp(..)
draws box plots based on the given summaries in
z
. It is usually called from within boxplot(..)
,
but can be invoked directly.
bxp(z, notch = FALSE, width = NULL, varwidth = FALSE, notch.frac = 0.5, boxwex = 0.8, border = par("fg"), col = NULL, log = "", pars = NULL, frame.plot = axes, horizontal = FALSE, add = FALSE, at = NULL, ...)
z |
a list containing data summaries to be used in constructing the plots.
These are usually the result of a call to boxplot ,
but can be generated in any fashion. |
notch |
if notch is TRUE , a notch is drawn in each
side of the boxes. If the notches of two plots do not
overlap then the medians are significantly different at the
5 percent level. |
width |
a vector giving the relative widths of the boxes making up the plot. |
varwidth |
if varwidth is TRUE , the boxes are drawn
with widths proportional to the square-roots of the number of
observations in the groups. |
boxwex |
a scale factor to be applied to all boxes. When there are only a few groups, the appearance of the plot can be improved by making the boxes narrower. |
notch.frac |
numeric in (0,1). When notch=TRUE , the fraction
of the box width that the notches should use. |
border |
character, the color of the box borders. Is recycled for multiple boxes. |
col |
character; the color within the box. Is recycled for multiple boxes |
log |
character, indicating if any axis should be drawn in
logarithmic scale, as in plot.default . |
frame.plot |
logical, indicating if a ``frame''
(box() ) should be drawn; defaults to TRUE , unless
axes = FALSE is specified. |
horizontal |
logical indicating if the boxplots should be
horizontal; default FALSE means vertical boxes. |
add |
logical, if true add boxplot to current plot. |
at |
numeric vector giving the locations where the boxplots should
be drawn, particularly when add = TRUE ;
defaults to 1:n where n is the number of boxes. |
pars,... |
Graphical parameters can be passed as arguments to
this function, either as a list (pars ) or normally(... ). |
An invisible vector, actually identical to the at
argument, with the coordinates ("x" if horizontal is false, "y"
otherwise) of box centers, useful for adding to the plot.
str(bx.p <- boxplot(split(rnorm(100), gl(5,20)))) op <- par(mfrow= c(2,2)) bxp(bx.p, xaxt = "n") bxp(bx.p, notch = TRUE, axes = FALSE) bxp(bx.p, notch = TRUE, col= 'lightblue', frame = FALSE) bxp(bx.p, notch = TRUE, col= 'lightblue', border='red', log = "x", ylim = c(-1,4), main = "bxp(*, log='x', ylim=*)") par(op)