Draw a Cleveland dot plot.
dotchart(x, labels = NULL, groups = NULL, gdata = NULL,
ann = par("ann"), xaxt = par("xaxt"), frame.plot = TRUE, log = "",
cex = par("cex"), pt.cex = cex,
pch = 21, gpch = 21, bg = par("bg"),
color = par("fg"), gcolor = par("fg"), lcolor = "gray",
xlim = range(x[is.finite(x)]),
main = NULL, xlab = NULL, ylab = NULL, …)either a vector or matrix of numeric values (NAs are
allowed). If x is a matrix the overall plot consists of
juxtaposed dotplots for each row. Inputs which satisfy
is.numeric(x) but not
is.vector(x) || is.matrix(x) are coerced by
as.numeric, with a warning.
a vector of labels for each point.
For vectors the default is to use names(x) and for matrices
the row labels dimnames(x)[[1]].
an optional factor indicating how the elements of
x are grouped.
If x is a matrix, groups will default to the columns
of x.
data values for the groups. This is typically a summary such as the median or mean of each group.
a logical value indicating whether the default annotation
(title and x and y axis labels) should appear on the plot.
a string indicating the x-axis style; use "n" to
suppress and see also par("xaxt").
a logical indicating whether a box should be drawn around the plot.
a character string indicating if one or the other axis should
be logarithmic, see plot.default.
the character size to be used. Setting cex
to a value smaller than one can be a useful way of avoiding label
overlap. Unlike many other graphics functions, this sets the actual
size, not a multiple of par("cex").
the cex to be applied to plotting symbols.
This behaves like cex in plot().
the plotting character or symbol to be used.
the plotting character or symbol to be used for group values.
the background color of plotting characters or symbols to be
used; use par(bg= *) to set the background color of
the whole plot.
the color(s) to be used for points and labels.
the single color to be used for group labels and values.
the color(s) to be used for the horizontal lines.
horizontal range for the plot, see
plot.window, for example.
overall title for the plot, see title.
axis annotations as in title.
graphical parameters can also be specified as arguments.
This function is invoked for its side effect, which is to produce two variants of dotplots as described in Cleveland (1985).
Dot plots are a reasonable substitute for bar plots.
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
Cleveland, W. S. (1985) The Elements of Graphing Data. Monterey, CA: Wadsworth.
Murrell, P. (2005) R Graphics. Chapman & Hall/CRC Press.
# NOT RUN {
dotchart(VADeaths, main = "Death Rates in Virginia - 1940")
op <- par(xaxs = "i") # 0 -- 100%
dotchart(t(VADeaths), xlim = c(0,100), bg = "skyblue",
main = "Death Rates in Virginia - 1940")
par(op)
# }