[R] making scatterplot easier to read

[Jim Lemon]

On Nov 22, 2011, at 4:58 PM, Szymek Drobniak wrote:

> Dear R users,
>
> do you know an easy way (other than star plot) of making several points
> laying one over another visible? Is it any simple way of increasing such
> "multipoint" symbols - or shifting their positions randomly to make
> several
> points in one place visible?
>
Hi Szymek,
The cluster.overplot and count.overplot functions (plotrix) provide two 
ways to do this. If you have lots and lots of points, count.overplot 
will be more useful.

Jim