Have a look at length(iris$Species) length(prev) --- Carla Rebelo <[EMAIL PROTECTED]> wrote:
> Hello! > > May you help me? I'm trying to do a contingency > table using this > > > data(iris) > > library(rpart) > > modelo <- rpart(Species ~., iris) > > prev <- predict(modelo, iris) > > Finally the contingency table > > table(iris$Species, prev) > But an error occurs: > Error in table(iris$Species, prev) : > all arguments must have the same length > > And I do not understand why, may you help me? > > Thank You! > > ______________________________________________ > 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. > ______________________________________________ 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.
