# [R] Re: simple bar plot with confidence interval

Martin Henry H. Stevens HStevens at muohio.edu
Fri Apr 26 17:17:23 CEST 2002

Haun -
Looks pretty pretty to me! You might look at arrows instead of segements
and make the arrow heads 90 degrees. You should also check the mail
archives regarding this frequently requested info - try plotCI() by Ben
Bolker in archives.

At 08:02 PM 4/25/2002, you wrote:
>Hi again,
>
>I camed up with the following script, which works
>except it doesn't look very pretty. If someone can
>suggest how to improve the graphics (e.g. adding a
>horizontal bar, etc.), I'd appreciate it.
>
>tbarHeight<-c(0.2700797, 0.7149945, 0.922099)
>names(tbarHeight)<-c("A", "B", "C")
>tbars<-barplot(height=tbarHeight,
>axes=T,ylim=c(0,1.2))
>tl<-c(0.4256, 0.8611, 0.9883) #lower whisks
>tu<-c(0.2048, 0.5797, 0.7914) #upper whisks
>segments(x0=tbars, x1=tbars, y0=tl, y1=tu)
>
>
>--- Haun Jung <haun_jung at yahoo.com> wrote:
> >   Hi, I have the following numbers as a result of
> >   bootstrap:
> >
> >   Bootstrap Statistics :
> >       original      bias    std. error
> >   t1* 0.2700797 0.02168322  0.05843803
> >
> >   Intervals :
> >   Level     Percentile
> >   95%   ( 0.2048,  0.4256 )
> >
> >   Can somebodly please show me how to plot a bar
> > with
> >   confidence interval? I've searched the archive,
> > but
> > i'm a novice, so it didn't help much, and I need it
> > really urgently. I'd be immensely grateful.
> >
> >
> > __________________________________________________
> > Do You Yahoo!?
>
> > http://games.yahoo.com/
> >
>
>
>__________________________________________________
>
>
>
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Martin Henry H. Stevens, Assistant Professor
338 Pearson Hall
Botany Department
Miami University
Oxford, OH 45056

Tel: (513) 529-4206
FAX: (513) 529-4243
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