Re: [R] patterned non-random jitter

From: Jim Lemon <>
Date: Sat, 16 Apr 2011 21:45:54 +1000

On 04/16/2011 06:30 AM, Daryl Morris wrote:
> Hi,
> Is there a function somewhere that does a "patterned" jitter of data?
> I've googled and the problem is that I don't know what to google for.
> The setting is in grouped data. I have plots which overlay jittered
> points on a boxplot. I simply jitter the "x-value", and the "y-value"
> has no effect.
> Scientists I work with frequently show plots made by another software
> where the jitter looks like a bunch smiles stacked on top of each other.
> The jitter isn't random, but instead depends on the "y-value" somehow.
Hi Daryl,
have a look at the code for the cluster.overplot and brkdn.plot functions in the plotrix package. These functions offset the points by regular intervals to avoid overplotting.

Jim mailing list PLEASE do read the posting guide and provide commented, minimal, self-contained, reproducible code. Received on Sat 16 Apr 2011 - 11:51:44 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 16 Apr 2011 - 13:20:31 GMT.

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

list of date sections of archive