Listers, I have created a cross-tab matrix using the following code:
S <- c(1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,1,2,3,1,1,2,3,1,2,2) F <- c(1,2,3,1,2,3,1,1,1,1,2,3,1,1,3,2,2,2,1,2,3,1,1,1,1,2,3,3,1,3,1,3,1,1,2,3,1,1,3,2,3,2,1,1,1,2,3,1,1,2) table(S,F) fF <-factor(F, labels = c("Dem","Ind","Rep")) fS <-factor(S, labels = c("Dem","Ind","Rep")) PiD <- table(fS,fF) PiD <- cbind(PiD, margin.table(PiD,1)) PiD <- rbind(PiD, margin.table(PiD,2)) Now I would like to add the Column Name and Row Name "Total" to the last row and last column (where the marginal totals now hang out). When I use the command colnames(PiD[,4]) <- c("total") I get the error: Error in `colnames<-`(`*tmp*`, value = "WTF") : attempt to set colnames on object with less than two dimensions Since I am still new to R, I can't really understand the error... Can someone tell me what I am doing wrong here? 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.