If I want to plot something, Preview opens it. Fine. After doing that I want to change the plot for instance. The new plot will be calculated but Preview still displays the old one. I have to 'Revert' it or close it before running the R script.
Why not use pdfview instead? It'll do that automatically.
On the other hand it would be nice to have an easy way to set pdf()'s 'onefile' argument in order to be able to print all plots in one pdf. Maybe solvable by using a TM variable?
The problem is the need to call dev.off once you have finished.
Hadley