[R] label option in 'barplot'?
Chuck Cleland
ccleland at optonline.net
Thu Jan 18 11:06:05 CET 2007
Justin Gengler wrote:
> Hello all,
>
> When using the 'barplot' function, how would one go about creating
> labels on the top of the bars corresponding to the actual frequency
> values (i.e., the height of the bar). For histograms, one can use
> the 'LABEL=T' parameter to this effect, but it is not available for
> barplot. Must one manually create such labels for a barplot (perhaps
> using mtext)?
Yes, I believe you would need to add those labels yourself. Use
text() rather than mtext() to get something similar to what hist() does
when labels=TRUE. Here is how you could put the labels either just
below or just above the top of the bar:
# Below
X <- barplot(VADeaths, beside=TRUE, ylim=c(0,80))
text(X, VADeaths, labels=VADeaths, pos=1, offset=.5, col="red")
# Above
X <- barplot(VADeaths, beside=TRUE, ylim=c(0,80))
text(X, VADeaths, labels=VADeaths, pos=3, offset=.5)
> Thanks.
>
> Justin Gengler
>
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--
Chuck Cleland, Ph.D.
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