psych (version 1.6.12)

bi.bars: Draw pairs of bargraphs based on two groups

Description

When showing e.g., age or education distributions for two groups, it is convenient to plot them back to back. bi.bars will do so.

Usage

bi.bars(x,grp,horiz,color,label=NULL,zero=FALSE,xlab,ylab,...)

Arguments

x

The data to be drawn

grp

a grouping variable.

horiz

horizontal (default) or vertical bars

color

colors for the two groups -- defaults to blue and red

label

If specified, labels for the dependent axis

zero

If TRUE, subtract the minimum value to make the numbers range from 0 to max -min. This is useful if showing heights

xlab

xaxis label if appropriate

ylab

y axis label otherwise

...

Further parameters to pass to the graphing program

Value

Details

A trivial, if useful, function to draw back to back histograms/barplots. One for each group.

Examples

data(bfi)
with(bfi,{bi.bars(age,gender,ylab="Age",main="Age by males and females")
       bi.bars(education,gender,xlab="Education",main="Education by gender",horiz=FALSE)})

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