R help - Apr 2013 - sample size in box plot labels

Hi,

I would like to put the sample number beside each lable in a boxplot.
How do I do this? Essentially, I need to count the sample size for each
factor, see below:
Thanks

boxplot(DATA$K_Merge~factor(DATA$UnitName_1),axes=FALSE,col=colours)
title(main=list("Tukey Boxplot by Geology:\n K(%)",cex=cexlb))
axis(1, 1:21, labels=FALSE, las=2)
text(seq(1, 21, by=1), par("usr")[3], labels
levels(factor(DATA$UnitName_1)), srt = 45,  adj = c(1.03,1.03), xpd = TRUE,
cex=1.8)
axis(2, seq(-1,5, 1), seq(-1, 5, 1))


-- 
Shane

	[[alternative HTML version deleted]]

Hi
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Shane Carey
> Sent: Friday, April 26, 2013 11:49 AM
> To: r-help at r-project.org
> Subject: [R] sample size in box plot labels
> 
> Hi,
> 
> I would like to put the sample number beside each lable in a boxplot.
> How do I do this? Essentially, I need to count the sample size for each
> factor, see below:
> Thanks
> 
> boxplot(DATA$K_Merge~factor(DATA$UnitName_1),axes=FALSE,col=colours)
> title(main=list("Tukey Boxplot by Geology:\n K(%)",cex=cexlb))
axis(1,
> 1:21, labels=FALSE, las=2) text(seq(1, 21, by=1), par("usr")[3],
labels
> = levels(factor(DATA$UnitName_1)), srt = 45,  adj = c(1.03,1.03), xpd >
TRUE,
> cex=1.8)
> axis(2, seq(-1,5, 1), seq(-1, 5, 1))
Does not work without data.

Do you want something like this?

boxplot(Sepal.Length~Species, data=iris)
mtext(as.character(table(iris$Species)), 1, at=1:3)

Regards
Petr


> 
> 
> --
> Shane
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-
> guide.html
> and provide commented, minimal, self-contained, reproducible code.

Hello,

To count the sample sizes for each factor try

tapply(DATA$K_Merge, DATA$UnitName_1, FUN = length)


Hope this helps,

Rui Barradas

Em 26-04-2013 10:48, Shane Carey escreveu:
> Hi,
>
> I would like to put the sample number beside each lable in a boxplot.
> How do I do this? Essentially, I need to count the sample size for each
> factor, see below:
> Thanks
>
> boxplot(DATA$K_Merge~factor(DATA$UnitName_1),axes=FALSE,col=colours)
> title(main=list("Tukey Boxplot by Geology:\n K(%)",cex=cexlb))
> axis(1, 1:21, labels=FALSE, las=2)
> text(seq(1, 21, by=1), par("usr")[3], labels >
levels(factor(DATA$UnitName_1)), srt = 45,  adj = c(1.03,1.03), xpd = TRUE,
> cex=1.8)
> axis(2, seq(-1,5, 1), seq(-1, 5, 1))
>
>