[R] patterned non-random jitter

From: Daryl Morris <darylm_at_uw.edu>
Date: Fri, 15 Apr 2011 13:30:04 -0700

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.

thanks, Daryl
SCHARP, FHCRC, UW Biostatistics



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