The statistics program R is sometimes too complete. PDF or EPS plots retain all the detail, and this can sometimes be too much. Here's a plotting routine that adaptively reduces the number of points plotted. This gives a smaller output file that looks the same as the full plot.

My reponses to a blog posting by Meryl Dorey of the Australian Vaccination Network, with links to her comments.

One of our computers was infected on Thursday night after visiting the Tour de France tracker page on the SBS website. The malware popped up an Adobe Flash upgrade box that was incredibly realistic. We both checked it and then clicked OK. Here's a guide for removal, based on what I had to do.