[ESS] Graphics in emacs window: how to copy R screen devices in non-interactive sessions (remotes)
spinuvit at gmail.com
Tue Nov 19 02:40:36 CET 2013
I was hoping to make it at least partially work with plot.new and
before.plot.new hooks. But I cannot make it work even for completed
What about qtbase + qtutils? Any hope there for capturing incremental
graphics? I installed it but cannot see anything useful.
> For incremental changes, it's easy to catch them at the device layer. Assuming
> implementing a custom graphics device is outside the scope, you would need to do
> something like take a snapshot each time R becomes idle, which would be a lot of
Not really feasible. We cannot reliably know when R is idle.
> So you might need your own device that would print to stdout, with
> some prefix that hides it from the buffer. Not completely infeasible.
It should be a modification of an existing device. That to say, instead
of buffering the output, the device should flush the content into a file
each time a major change has been made. The problem is how you define a
Another idea is to change print methods for grid and a couple of
internal plotting routines for base graphics to re-save the device each
time a modification has been made.
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