Hello, I have some trouble understanding why !b &&TRUE is TRUE. Do you have an idea?
> b <- matrix(c(0,1,1,0,1,0),2) > !b [,1] [,2] [,3] [1,] TRUE FALSE FALSE [2,] FALSE TRUE TRUE > !b &&TRUE [1] TRUE Best regards, Jeremie ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.