[Rd] compress defaults for save() and save.image()
Friedrich.Leisch at tuwien.ac.at
Friedrich.Leisch at tuwien.ac.at
Fri Mar 31 11:38:26 CEST 2006
>>>>> On Thu, 30 Mar 2006 18:23:11 +0100 (BST),
>>>>> Prof Brian Ripley (PBR) wrote:
> I have changed the default in save() to compress = !ascii. This seems
> quite safe, as almost always save() is called explicitly and people will
> appreciate that it might take a little time to save large objects (and
> depending on your system, compression could even be faster).
Very good idea.
> Should we also change the default in save.image()? That is almost always
> used implicitly, via q(), a menu .... There are arguments that it is a
> more serious change so should not be done at the end of the release cycle,
> and also that large .RData files are something people would want to avoid.
> BTW, the defaults can be changed via options() (see ?save): has anyone
> ever found that useful?
Yes, I and many people I know have
options(save.defaults=list(compress=TRUE))
in our settings, and I'd like to keep the option version such that I
am independent from whatever the function defaults are.
>>>>> Liaw, Andy wrote:
> - I always use save(..., compress=TRUE), without exception.
> - The only time I'd use save.image() is when I need to break a remote
> connection on short notice.
> - I have not used options() to set the default simply because I have not
> figured out how exactly to do it. From what I remember, the doc simply says
> it can be done, but does not explicitly say how.
Umm, there is an explicit example in help(save), I have added a pointer from
the main text of the help page.
Best,
Fritz
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