> score<-read.csv("http://users.stat.umn.edu/~chen2285/hw/ACT.csv")
> interaction.plot(sex,rep(1,861),score,fun=mean,legend=F,main="profile of > sex") Error: tapply(response, list(x.factor, trace.factor), fun) : arguments must have same length > length(sex) [1] 861 > length(type) [1] 861 > length(score) [1] 3 How can I alter the length of the variable score here to make this function work? or any other way to perform interaction plot? -- View this message in context: http://r.789695.n4.nabble.com/arguments-must-have-same-length-tp4625885.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.