On 07-Nov-08 00:53:56, Edna Bell wrote: > Dear R Gurus: > > How do you put together a 2^2 (or even 2^k) factorial problem, please?
I'm not clear about what you mean here, especially about "put together"! Can you describe what you want to end up with in more detail? > Since you have 2 levels for A and B, do you put in "A+" and "A-" as > factors, please? In any case, I would not use the names "A+" and "A-", since this provides too many opportunities for expressions involving these to be interpreted as arithmetic operations. Better, and safer, to use names "A1" and "A0", say. Best wishes, Ted. > Thanks, > Edna Bell -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 07-Nov-08 Time: 09:51:39 ------------------------------ XFMail ------------------------------ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
