This is my playing about The last one is a matrix of factors of dimension 2 by 2. It;s just that it does not look that way.
> tt <- matrix(as.numeric(factor(c(T,F,F,T))), 2,2) > str(tt) num [1:2, 1:2] 2 1 1 2 > tt <- matrix((factor(c(T,F,F,T))), 2,2) > str(tt) chr [1:2, 1:2] "TRUE" "FALSE" "FALSE" "TRUE" > tt <- c(T,F,F,T) > str(tt) logi [1:4] TRUE FALSE FALSE TRUE > dim(tt) <- c(2,2) > str(tt) logi [1:2, 1:2] TRUE FALSE FALSE TRUE > tt <- factor(c(T,F,F,T)) > dim(tt) <- c(2,2) > str(tt) factor [1:2, 1:2] TRUE FALSE FALSE TRUE - attr(*, "levels")= chr [1:2] "FALSE" "TRUE" - attr(*, "class")= chr "factor" > tt [1] TRUE FALSE FALSE TRUE Levels: FALSE TRUE > > -----Original Message----- > From: Adrian Baddeley [mailto:[EMAIL PROTECTED] > Sent: Friday, 3 December 2004 2:44 PM > To: Mulholland, Tom > Cc: [EMAIL PROTECTED] > Subject: RE: [R] factor matrix > > > > > matrix(as.numeric(factor(c(T,F,F,T))), 2,2) > > No, this produces a matrix with numeric values, > not categorical values. > > > ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
