On 21/04/2008 4:59 AM, Norbert NEUWIRTH wrote:
> dear useRs and developeRs,
>
> I am afraid it is a very basic question, but I did not find anything alike in
> the literature.
>
> The R standard graphics device shows the opportunity to activate the history
> of plots drawn within the current session. Th user can scroll back and see
> the last graphs (or same graph with some changes in parameters). I did not
> find out yet how to activate the history by code. Any ideas?
When you open the window, use windows(record=TRUE).
If you want this to happen by default, write your own wrapper for the
windows() graphics device:
windows <- function(..., record=TRUE)
grDevices::windows(..., record=record)
One thing I'd like to do, but didn't have time to implement before
2.7.0, is to have history set to some finite size, e.g. a default might
be the last 3 or 10 plots. The problem with record=TRUE is that it
keeps a record of all the plots, so memory use just increases and increases.
Duncan Murdoch
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