st: RE: Connected dot plot

[Roger Newson <roger.newson@kcl.ac.uk>]

At 11:27 25/02/04 -0800, Gary Longton wrote:
> Chris Barnes wrote:
>
> > I wonder if I could ask a graphics question.
> > I want to produce a connected dot plot with whisker for each time point
> > representing 95% confidence limits. Could someone point me in the write 
> > direction.
> and Nick Cox replied:
>
> > I guess the right direction is something like
> >
> > twoway rspike lower upper time ||
> >       connect response time
> >
> > and that hinges on the limits being put in
> > variables beforehand.
>
> Or, a slight twist on Nick's suggestion if you prefer the more traditional 
> error bars (whiskers with "caps"?) to depict confidence limits: use -rcap- 
> in place of -rspike- .  See help for twoway_rcap or twoway_rspike
Another possibility is to use the -eclplot- package, downloadable from SSC, 
which plots general confidence interval plots. This has a -scatteropts()- 
option that can contain -scatter_options as "options within options", 
including a -connectstyle()- option to connect the points corresponding to 
the estimates. It also has a -rplottype()- option so the user can specify 
capped or spiked error bars. In Stata, type -ssc desc eclplot- to find out 
more.

Roger


--
Roger Newson
Lecturer in Medical Statistics
Department of Public Health Sciences
King's College London
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Opinions expressed are those of the author, not the institution.

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