Here is a toy example of what I want library(lattice) result <- data.frame(score = 1:10, theta = seq(from = -5, to = 5, length = 10)) result$theta2 <- result$theta + .3 xyplot(score ~ theta + theta2, result, type = c('g', 'l'))
However, in reality, the number of variables along the x-axis will vary in unknown ways. So, I collect them in a matrix, similar to something like thetaMat <- cbind(result$theta, result$theta2) I recall at one point being able to pass a matrix of some form, such as xyplot(score ~ thetaMat[,1:ncol(thetaMat)], result, type = c('g', 'l')) This fails, and I am cannot recall the right usage for doing this without having to stack the columns (which I'm hoping to avoid). Can anyone suggest the right usage for this concept? Thanks Harold [[alternative HTML version deleted]] ______________________________________________ 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.