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Record plot which stores a plot to an internal R data structure and Replay Plot which replays the plot enables one to keep plots around and use them accross sessions at least until version 3. If you cannot restore old plots and treat them as data and save accross sessions, there is little reason for recordPlot. Either R needs to dispense with internal formats entirelly, a bad move in my opinion

R had an internal Plot format which could be saved in files and then reused. Just like one can save data.frames or lists of data which I routinely do could save plot which could be used for further elaboration and analysis. Thus you could modify a plot after you saved it. Matlab has a fig format which it uses for that purpose. The current version of R version 3 allows plots only to be used

I wrote about this some time back as this new "feature" has made R less convenient for me since I story many, say 1000 to 1500 diagnostic plots per session. Georgely Daroczi has a nice hack in Rapporter//pander which it makes it possible to replay a single bad plot by hacking the data structure so as to change an offending part. Not surprisingl.doing this to all my saved recordedplot