[R] y-axis with "break"

Ben Bolker ben at zoo.ufl.edu
Fri Aug 23 18:58:09 CEST 2002


  I don't have anything better than Uwe suggested, but I did write an 
"axis.break()" function at one point that inserts the actual break in the 
axis -- let me know if you want it.

  Ben Bolker

On Fri, 23 Aug 2002, Uwe Ligges wrote:

> 
> 
> Nicolas Schneider wrote:
> > 
> > Dear R-users
> > 
> > I would like to draw a barplot with a special y-axis. Most of my data points are
> > in the range from -50 to 50, apart from one value that is 550. I would now like
> > to have a y-axis from -50 to 50, then a "break" and the "rest" of the y-axis,
> > let's say from 500 to 600. In order to make clear what I'm trying to do, I
> > attached a figure.
> > 
> > Is it possible to do this in R?
> 
> Not really, I think. What you can do, e.g., is that ugly trick along the
> following lines:
> 
>  barplot(c(-50, 50, 450 - 300, 50), ylim=c(-150, 200), yaxt="n")
>  axis(2, seq(-150, 200, 50), labels = c(seq(-150, 100, 50), 450, 500))
>  lines(rep(par("usr")[1], 2), c(100, 150), col="white", lty="dashed")
> 
> Better solutions are welcome!
> 
> Uwe Ligges
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318 Carr Hall                                bolker at zoo.ufl.edu
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