[rkward-devel] Request for feedback on plot history

[Thomas Friedrichsmeier]

On Sunday 05 September 2010, Thomas Friedrichsmeier wrote:
> But perhaps it's not that hard after all? I just tried this with the
> X11Cairo device:
>     plot(1, 1)
>     a <- recordPlot()
>     dev.off()
>     replayPlot (a)
>     b <- recordPlot()
>     identical (a, b)	# TRUE
>     title ("something's changed")
>     c <- recordPlot()
>     identical (a, c)	# FALSE
> I have not yet tested the windows() or quartz() devices, yet. But if the
> same thing works, there, this means we do have a reliable way to tell,
> whether a plot has been modified after all (only after calling
> recordPlot(), but still).

Update: I have tested on windows(), now, and it works there, too. And 
identical (a, b) appears to be pretty fast. For a 1.6MB plot (i.e. above the 
default limit), it's around 10 msecs on my Centrino @ 2.0 GHz.

Regards
Thomas
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