Try the table() function. ?table
For example, df <- data.frame(real=sample(0:1, 20, replace=T), pred=sample(0:1, 20, replace=T)) table(df) pred real 0 1 0 3 7 1 4 6 Jean Doussa wrote on 09/02/2011 08:46:42 PM: > > hi users > I have a data frame in with there are two colomns real values and predicted > ones (for a dichotomic response). > How can i obtain a confusion matrix (miscalssification rat and errors)? > The costs are egal. > > Thanks [[alternative HTML version deleted]] ______________________________________________ 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.