Barplot: Bar Plots

In RcmdrMisc: R Commander Miscellaneous Functions

Bar Plots

Description

Create bar plots for one or two factors scaled by frequency or precentages. In the case of two factors, the bars can be divided (stacked) or plotted in parallel (side-by-side). This function is a front end to barplot in the graphics package.

Usage

Barplot(x, by, scale = c("frequency", "percent"), conditional=TRUE,
  style = c("divided", "parallel"), 
  col=if (missing(by)) "gray" else rainbow_hcl(length(levels(by))),
  xlab = deparse(substitute(x)), legend.title = deparse(substitute(by)), 
  ylab = scale, main=NULL, legend.pos = "above", label.bars=FALSE, ...)

Arguments

x	a factor (or character or logical variable).
by	optionally, a second factor (or character or logical variable).
scale	either "frequency" (the default) or "percent".
conditional	if TRUE then percentages are computed separately for each value of x (i.e., conditional percentages of by within levels of x); if FALSE then total percentages are graphed; ignored if scale="frequency".
style	for two-factor plots, either "divided" (the default) or "parallel".
col	if by is missing, the color for the bars, defaulting to "gray"; otherwise colors for the levels of the by factor in two-factor plots, defaulting to colors provided by rainbow_hcl in the colorspace package.
xlab	an optional character string providing a label for the horizontal axis.
legend.title	an optional character string providing a title for the legend.
ylab	an optional character string providing a label for the vertical axis.
main	an optional main title for the plot.
legend.pos	position of the legend, in a form acceptable to the legend function; the default, "above", puts the legend above the plot.
label.bars	if TRUE (the default is FALSE) show values of frequencies or percents in the bars.
...	arguments to be passed to the barplot function.

Value

Invisibly returns the horizontal coordinates of the centers of the bars.

Author(s)

John Fox [e-mail]

See Also

barplot, legend, rainbow_hcl

Examples

with(Mroz, {
  Barplot(wc)
  Barplot(wc, col="lightblue", label.bars=TRUE)
  Barplot(wc, by=hc)
  Barplot(wc, by=hc, scale="percent", label.bars=TRUE)
  Barplot(wc, by=hc, style="parallel", 
    scale="percent", legend.pos="center")
})

RcmdrMisc documentation built on Sept. 27, 2023, 1:06 a.m.