[R] Increase the number of plotting characters in dotplot (lattice)?

[Chuck Cleland]

library(lattice)

show.settings()

trellis.par.set(superpose.symbol = list(pch = 1:16), dot.symbol = 
list(pch = 1:16))

show.settings()

?trellis.par.get

Fredrik Karlsson wrote:
> Dear list,
> 
> I am using the dotplot function of lattice and like it very much.
> However, in some of the plots, I have more than 7 categories that I
> would like to represent by different plotting characters in the graph,
> which is  a problem. For the categories after the 7th, the plotting
> characters are recycled, creating a confisuing graph indeed.
> 
> So, my question is: how do I increase the number of unique plotting characters?
> 
> /Fredrik
> 
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Chuck Cleland, Ph.D.
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