[R] Plot symbols for more than 25 groups

[Marc R. Feldesman]

Is there any effective way to get distinct geometric plotting symbols and 
colors for plots involving more than 25 groups?

Thanks.




Dr. Marc R. Feldesman
Professor and Chairman Emeritus
Anthropology Department - Portland State University
email:  feldesmanm at pdx.edu
email:  feldesman at attglobal.net
fax:    503-725-3905


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