Dear Marc,
I may misunderstand your question, so perhaps this answer isn't what you're
looking for:
A short time ago, Henrik Bengtsson posted a function to r-help (search for
plotSymbols in the list archive) that displays all available symbols. I
think that it's fair to say that fewer than 25 of these could be
characterized as distinct geometric symbols.
On the other hand, the colour space for R is very large; see, e.g.,
help("colours") and the help pages linked to it.
Moreover, if you take combinations of filled symbols and even basic colours,
you could in principle represent more than 25 groups. I wonder, however,
whether someone viewing a graph with so many different symbols will be able
to parse the information.
I hope this helps,
John
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Marc
> R. Feldesman
> Sent: Thursday, April 01, 2004 11:40 PM
> To: [EMAIL PROTECTED]
> Subject: [R] Plot symbols for more than 25 groups
>
> 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: [EMAIL PROTECTED]
> email: [EMAIL PROTECTED]
> fax: 503-725-3905
>
>
> "Don't knock on my door if you don't know my Rottweiler's
> name" Warren Zevon "Its midnight and I'm not famous yet"
> Jimmy Buffett
>
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