RcmdrMisc (version 2.9-1)

Hist: Plot a Histogram

Description

This function is a wrapper for the hist function in the base package, permitting percentage scaling of the vertical axis in addition to frequency and density scaling.

Usage

Hist(x, groups, scale=c("frequency", "percent", "density"), xlab=deparse(substitute(x)), 
    ylab=scale, main="", breaks = "Sturges", ...)

Value

This function is primarily called for its side effect --- plotting a histogram or histograms --- but it also invisibly returns an object of class hist or a list of hist objects.

Arguments

x

a vector of values for which a histogram is to be plotted.

groups

a factor (or character or logical variable) to create histograms by group with common horizontal and vertical scales.

scale

the scaling of the vertical axis: "frequency" (the default), "percent", or "density".

xlab

x-axis label, defaults to name of variable.

ylab

y-axis label, defaults to value of scale.

main

main title for graph, defaults to empty.

breaks

see the breaks argument for hist.

...

arguments to be passed to hist.

Author

John Fox

See Also

hist

Examples

    data(Prestige, package="car")
    Hist(Prestige$income, scale="percent")
    with(Prestige, Hist(income, groups=type))