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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.
bi.bars(x,grp,horiz,color,label=NULL,zero=FALSE,xlab,ylab,...)
The data to be drawn
a grouping variable.
horizontal (default) or vertical bars
colors for the two groups -- defaults to blue and red
If specified, labels for the dependent axis
If TRUE, subtract the minimum value to make the numbers range from 0 to max -min. This is useful if showing heights
xaxis label if appropriate
y axis label otherwise
Further parameters to pass to the graphing program
a graphic
A trivial, if useful, function to draw back to back histograms/barplots. One for each group.
# NOT RUN { 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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