Re: [R] Truncating y axis

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From: Frank E Harrell Jr (fharrell@virginia.edu)
Date: Sat 28 Jun 2003 - 22:32:39 EST 

Message-id: <20030628083239.3d60c96f.fharrell@virginia.edu>

On Sat, 28 Jun 2003 14:03:27 +0200 (MEST)
Shravan Vasishth <vasishth@coli.uni-sb.de> wrote:

> Hi folks,
>
> I want to have a y-axis using matplot where the y axis is truncated as
> shown schematically below:
>
> (msecs)
>
> 3000 | x
> ~
> ~
> 800 | x
> |
> | x
> |
> ----|----|----|-----------------
> 1 2 3
> Position
>
> The ~ is supposed to stand for a curved line showing a break. The issue is
> that I want to plot the points shown by the x's, but if I plot a
> continuous y axis then the confidence intervals about the points at
> positions 2 and 3 are not clearly visible...
>
> Can someone suggest how this might be done? I did study the manuals and
> contributed manuals first, and searched the archives and FAQs, just
> couldn't find any discussion of such a situation.
>
> Thanks much in advance,
>
> --
> Shravan Vasishth Phone: +49 (681) 302 4504

See W. Cleveland "The Elements of Graphing Data" (Hobart Press) for reasons not to do this. Consider using a nonlinear scale or making the graph taller. 

---
Frank E Harrell Jr              Prof. of Biostatistics & Statistics
Div. of Biostatistics & Epidem. Dept. of Health Evaluation Sciences
U. Virginia School of Medicine  http://hesweb1.med.virginia.edu/biostat

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