I don't think that you're actually creating a
scatterplot if the x-axis is a factor. You're getting
a boxplot.
If you want a scatterplot then something like this
might work.
======================================================
means<-c(4,6,8)
stand.error<-c(0.1,0.3,0.5)
aa <- factor(c("A","B","C","A", "C", "C"))
dd <- 1:length(levels(aa))
plot(dd, means, xaxt="n")
arrows(dd, means + stand.error, dd, means-stand.error,
code=3, angle=90)
axis(1, at=dd, labels=levels(aa))
=======================================================
--- Giacomo Prodi <[EMAIL PROTECTED]> wrote:
> hello, ladyes and gentlemans.
>
> check this:
>
> means<-c(4,6,8)
> stand.error<-c(0.1,0.3,0.5)
>
> now i've strongly tryed to scatterplot the
> means(y-axis),by showing their sd with the
> arrow(..,code=3,angle=90) function.
> The problem is that my x-axis has categorical values
> (say, factor(x)), and the arrows() can't recognize
> them as right coordinates.
> ?????
> thank you all in advance
> B.F. insubria university (varese)
>
>
>
> La web mail più usata al mondo.
> http://it.docs.yahoo.com/mail/overview/index.html
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained,
> reproducible code.
>
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
