Re: [R] abline outside of plot region

From: Rolf Turner <>
Date: Sat, 30 Apr 2011 16:51:20 +1200

On 30/04/11 01:14, Nick Sabbe wrote:
> Hi R people.
> I ran into this problem: I created a plot with errbars, like this:
>> errbar(x=c(1,2,3,4), y=c(2,1,3,3), yminus=c(1.5,0.5,2.5,2.5),
> yplus=c(2.5,1.5,3.5,3.5))
> Next, I wanted to accentuate some x value with an abline, like this:
>> abline(v=2)
> In one of my R sessions (which admittedly I have had open for quite a while
> now), the abline draws outside of the plotting region of errbars (till the
> edge of my plotting window at least).
> I tested for the cause by opening another session (clean) of the same
> version of R (2.13), and running the same set of commands. In this session,
> I do not have this behavior. Conclusion: I must have changed some graphical
> parameter in my original session, but I don't know which one. Do you?

I think what has happened is not that *you* changed some graphical parameter,
but rather that the package Hmisc did. In a rather strange way. (I *presume*
that you are using the errbar() function out of Hmisc rather than out of the sfsmisc package --- you didn't say).

For a while I thought that the problem was associated with the *installation*
of Hmisc, becomes it seemed to happen only on the first occasion after I did the install, and on later occasions (quit from R, restart, load Hmisc, try errbar and abline) the problem did not occur.

But then, about the third time I tried the re-install, the problem never happened
at all. But it ***did*** happen, a couple of times. So you're not imagining it,
you'll be pleased to know.

I think that if it *does* happen to you again, you can fix it by setting


I checked on par()$xpd a couple of times when the problem occurred, and got NA, which is consistent with the observed problem.

The whole thing is weird, but. Gremlins?


         Rolf Turner mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Sat 30 Apr 2011 - 04:57:47 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Sat 30 Apr 2011 - 05:00:34 GMT.

Mailing list information is available at Please read the posting guide before posting to the list.

list of date sections of archive