On Mon, 27 Jun 2005 [EMAIL PROTECTED] wrote: > in an LDA analysis with n groups n-1 LD functions result. Implicitly this > defines an LD fucntion for the last group. Does there exist code already > to explictly construct this LD function?
What `LDA analysis' are our discussing here? (LDA is usually `linear discriminant analysis', so what did you mean and what R function are you nor referring to?) R has lda in package MASS, and that works with n LD functions. To reduce it to n-1, subtract the last one from the others, in which case LD_n == 0. Anything you do in LD analysis only depends on differences in LD functions, and there really are n of them. With two groups one is conventionally taken to be zero (the first, usually, not the last). -- Brian D. Ripley, [EMAIL PROTECTED] Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
