On Tue, Nov 9, 2010 at 11:18 AM, nathan.kupp <nathan.k...@yale.edu> wrote: > > R, by default, has some of the most cryptic error / debug messages ever > invented.
I nominate the html 404 error for that. > The error message encountered by the two posters: > > Error in if (any(co)) { : missing value where TRUE/FALSE needed > In addition: Warning message: > In FUN(newX[, i], ...) : NAs introduced by coercion > > results from the inclusion of a factor variable in the x data frame passed > to the svm(x,y) call. I've mistakenly done this many times; the text of the > error message gives no indication that this is the source of the problem. Passing data to a function without knowing its str()ucture is like going into surgery without knowing which leg should be amputated---it's polite if your surgeon knows, but I'd never rely on it. > Removing the factor(s) from x will eliminate the error. > > Nathan Kupp > Ph.D. Candidate > Department of Electrical Engineering > Yale University > -- > View this message in context: > http://r.789695.n4.nabble.com/Question-in-using-e1071-svm-routine-tp896541p3034950.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. > -- Joshua Wiley Ph.D. Student, Health Psychology University of California, Los Angeles http://www.joshuawiley.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.