All, I am working with a large dataset that tracks who watches what media at what time. I am working on media consumption data from a survey, and one of the batteries asks if [r] has consumed a particular form of media at X time over the course of a week, so the data looks like this: 5:00-5:30 [0,1] 5:30-6:00 [0,1]. 23:30-0:00 [0,1] with a different variable for each time segment for each part of the week. I'm working on a way to aggregate that data in the manner of a density plot with a bar for each day of the week, and each timeslot shaded a darker hue for higher rate of consumption. I know how to make bivariate density plots in R, but the unwieldy amount of variables makes it impossible for this project. I could get means for each measure, which seems to me the easiest thing to do, but I don't know how to pull them together into a plot. Can you make a recommendation for an R plot, or a beginner's tool in processing that might help? David G. Tully Northwestern University Department of Political Science 601 University Place Evanston, IL 60208 d-tully@northwestern.edu [[alternative HTML version deleted]]