Vik, On Fri, Sep 21, 2012 at 12:42 PM, Vik Rubenfeld <v...@mindspring.com> wrote: > Max, I installed C50. I have a question about the syntax. Per the C50 manual: > > ## Default S3 method: > C5.0(x, y, trials = 1, rules= FALSE, > weights = NULL, > control = C5.0Control(), > costs = NULL, ...) > > ## S3 method for class ’formula’ > C5.0(formula, data, weights, subset, > na.action = na.pass, ...) > > I believe I need the method for class 'formula'. But I don't yet see in the > manual how to tell C50 that I want to use that method. If I run: > > respLevel = read.csv("Resp Level Data.csv") > respLevelTree = C5.0(BRAND_NAME ~ PRI + PROM + REVW + MODE + FORM + FAMI + > DRRE + FREC + SPED, data = respLevel) > > ...I get an error message: > > Error in gsub(":", ".", x, fixed = TRUE) : > input string 18 is invalid in this locale
You're not doing it wrong. Can you send me the results of sessionInfo()? I think there are a few issues with the function on windows, so a reproducible example would help solve the issue. -- Max ______________________________________________ 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.