I saw some people here post some good advice about using R once, so I started to teach myself how to use it. There's a command called par(new=T) that lets you plot over the previous plot. The problem is that even though you're using the same plot, the dimensions of a new plot can change. I was wondering if there was some way to take a "snapshot" of the dimensions from one plot and then preserve them for use with another plot. Does anyone know how to do this?