Hello, I am trying to run the code for quadratic discriminant analysis with the Spambase data set following the code example in the book "R in a Nutshell" by Joseph Adler (page 443). The line of code: > spam.qda <- qda(formula=is_spam~., data=spambase.training)
gives me an error: Error in qda.default(x, grouping, ...) : rank deficiency in group 1 (There really is a "tilde" after is_spam in the code, only on this web-page it appears as a hyphen :) Can someone please tell me why it does not work with me but appears to do so in the book? I am using R version 2.13.0. Thanks, Ravi -- View this message in context: http://r.789695.n4.nabble.com/Error-using-qda-on-the-spambase-training-dataset-tp4269941p4269941.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.