Jeff,
I am wondering what it even means to do what you say. In a compiled
language, I can imagine wrapping up an executable along with some kind of
run-time image (which may actually contain the parts of the executable that
includes what has not run yet) and revive it elsewhere.
But even there,
Use VirtualBox. You can take a 'snapshot' of a running virtual
machine, either from the GUI or from the CLI (vboxmanage snapshot ...)
and restore it later.
This requires NO changes to R. Snapshots can be restored on
another machine of the same kind with the same system software.
VirtualBox is
I used to work on a Prolog implementation that did something similar.
At any point you could explicitly save a snapshot of the current state
and then from the operating system command line, resume it.
This wasn't really for checkpointing. It was so that you could load
up a customised environment,
Duncan,
> R functions can call libraries written in other languages, and can
> start processes, etc. R doesn't know everything going on in every
> function call, and would have a lot of trouble saving it.
indeed, that obvious fact hadn't occurred to me. i withdraw my
contention. :)
cheers,
On 13/12/2021 12:58 p.m., Greg Minshall wrote:
Jeff,
This sounds like an OS feature, not an R feature... certainly not a
portable R feature.
i'm not arguing for it, but this seems to me like something that could
be a language feature.
R functions can call libraries written in other
Jeff,
> This sounds like an OS feature, not an R feature... certainly not a
> portable R feature.
i'm not arguing for it, but this seems to me like something that could
be a language feature.
cheers, Greg
__
R-help@r-project.org mailing list -- To
This sounds like an OS feature, not an R feature... certainly not a portable R
feature.
On December 13, 2021 8:37:30 AM PST, Andy Jacobson via R-help
wrote:
>Has anyone ever considered what it would take to implement checkpointing in R,
>so that long-running processes could be interrupted and
Has anyone ever considered what it would take to implement checkpointing in R,
so that long-running processes could be interrupted and resumed later, from a
different process or even a different machine?
Thanks,
Andy
--
Andy Jacobson
andy.jacob...@noaa.gov
NOAA Global Monitoring Lab
325
Thans Richard, it works well. --- Kai
On Monday, December 13, 2021, 04:00:33 AM PST, Richard O'Keefe
wrote:
You want to DELETE rows satisfying the condition P & Q.The subset() function
requires an expression saying whatyou want to RETAIN, so you need subset(PD,
!(P & Q)).
test <-
You want to DELETE rows satisfying the condition P & Q.
The subset() function requires an expression saying what
you want to RETAIN, so you need subset(PD, !(P & Q)).
test <- subset(PD, !(Class == "1st" & Survived == "No"))
By de Morgan's laws, !(P & Q) is the same as (!P) | (!Q)
so you could
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