I had considered using arrows or line segments to write my own function, but I though
that someone might have done it before me. Thanks to all for their rapid response.
The graphics I need can be generated using plotmeans in the gregmisc package.
Harvey
-----Original Message-----
From: Duncan Murdoch [mailto:[EMAIL PROTECTED]
Sent: Wednesday, July 09, 2003 8:46 AM
To: Monder, Harvey
Cc: '[EMAIL PROTECTED] r-project. org' (E-mail)
Subject: Re: [R] Showing limits on line graphs
On Wed, 9 Jul 2003 07:54:19 -0400, you wrote:
>Is there a function that would allow me to create a line graph of some central
>tendency, such as mean, with limits indicated by a vertical line at each data point,
>i.e. SD? It's a fairly common type of graphic, but in looking through examples I
>have been able to find, I have found no function for such a graph.
You can construct these yourself using arrows(angle=90). There are
functions which package this; one I can think of right now is plotCI,
in the gregmisc package.
Duncan Murdoch
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