Using pch you can use all the symbols in the current font, try:

plot(0:15, 0:15, type='n')
points( (0:255)%%16, (0:255)%/%16, pch=0:255 )

then do it again with
points( (0:255)%%16, (0:255)%/%16, pch=0:255, font=5 )

(font 5 is usually a symbol font, fonts 2, 3, and 4 are bold and italic
versions of the base font (font 1)).

If that does not give you enough variety in symbols then look at the
my.symbols function in the TeachingDemos package, this lets you create and
use your own symbols (though automatic legends are not available).


On Fri, Dec 21, 2012 at 3:06 PM, Diviya Smith <diviya.smith@gmail.com>wrote:

> Hi there,
>
> I was wondering if there is any R package that one can use for plotting
> that has more legend symbols - the standard pch has 18 symbols but I need
> ~30 for my application- and just using different colors is not an option.
>
> Thank you in advance,
> Diviya
>
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-- 
Gregory (Greg) L. Snow Ph.D.
538280@gmail.com

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