[R] Scatterplot Showing All Points
murdoch at stats.uwo.ca
Tue Dec 18 14:42:19 CET 2007
On 18/12/2007 7:31 AM, Antony Unwin wrote:
> Try the iplot command in iPlots. You can then vary both the
> pointsize and the transparency of your scatterplot interactively and
> decide which scatterplot conveys the information best. Sometimes
> it's helpful to use more than one scatterplot when presenting your
> (I must admit to being very surprised that jittering and sunflower
> plots have been suggested for a dataset of 5000 points. Do those who
> mentioned these methods have examples on that scale where they are
Sure. The original post said there were about 50-60 unique locations.
x <- rbinom(5000, 20, 0.15)
y <- rbinom(5000, 20, 0.15)
has a few more unique locations; tune those probabilities if you want it
closer. Due to the overlap, the distribution is very unclear. But this
makes the distribution quite clear.
I wouldn't use the default pch if I had 50000 points, but with pch=".",
it's not so bad even in that case.
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