A while ago I had the need to produce some posters that included lots of data (scientific style).  Having recently got back into R and learning LaTex I googled for a way to do this using R.  Here's what I found and ended up with, using R, LaTex, Beamer and BeamerPoster.

You can pull my beamerposter template and an example Sweave Rnw file from my Github.

beamerposter image