> On Nov 2, 2015, at 4:36 PM, Rolf Turner <r.tur...@auckland.ac.nz> wrote:
>
>
> On 03/11/15 01:41, Marc Schwartz wrote:
>
>>
>>> On Nov 2, 2015, at 6:00 AM, John Kane <jrkrid...@inbox.com> wrote:
>>>
>>> A rather silly question but I went to install a new package this
>>> morning and as usual a list of CRAN mirrors appeared but the
>>> Canadian ones had disappeared.
>>>
>>> Is this some peculiarity of my system (Ubuntu 14.10 with R version
>>> 3.2.2) or a new policy for R?
>>>
>>>
>>> John Kane Kingston ON Canada
>>
>>
>> Hi John,
>>
>> Presuming that the CRAN mirror list online is current, there do not
>> appear to be any CRAN mirrors in Canada which support secure HTTP
>> (HTTPS), which is now the default in 3.2.2.
>>
>> See the announcement from August 14 (SIGNIFICANT USER-VISIBLE CHANGES
>> and NEW FEATURES):
>>
>> https://stat.ethz.ch/pipermail/r-announce/2015/000589.html
>>
>> See ?chooseCRANmirror for more information.
>>
>> When you get a list of mirrors to select, by default the top of the
>> list will include mirrors that support HTTPS. The last entry on the
>> list should be (HTTP mirrors). Click that and it will bring up a list
>> of additional mirrors, including Canadian locations, that support
>> HTTP.
>
> Out of idle curiosity I started playing around with this stuff and ran into a
> puzzling phenomenon.
>
> When I execute
>
> chooseCRANmirror()
>
> I get an error message:
>
>> Error in download.file(url, destfile = f, quiet = TRUE) :
>> unsupported URL scheme
>
> Nevertheless a menu appears, with "(HTTP mirrors)" at the bottom, just as you
> said.
>
> I don't understand why chooseCRANmirror() still works despite the error being
> thrown.
>
> Tracing through what chooseCRANmirror() does I reduced the problem to:
>
> u <- "https://cran.r-project.org/CRAN_mirrors.csv";
> download.file(u,destfile="junk")
>
> which throws the error
>
>> Error in download.file(u, destfile = "junk") : unsupported URL scheme
>
> If I replace the "https" in the url by "http" then things run without an
> error being thrown.
>
> There is no immediate problem for me, since I can install packages from CRAN
> OK, using my usual New Zealand mirror (which is an http mirror).
>
> If I try to use one of the https mirrors that are shown by chooseCRANmirror()
> (e.g. Austria) then I get a warning:
>
>> Warning: unable to access index for repository
>> https://cran.r-project.org/src/contrib
>
> and the install goes back to using the New Zealand mirror.
>
> So there seems to be something not quite right with my system or with my
> installation of R. Although, as I said, there is no immediate problem, the
> fact that something is not quite right worries me.
>
> Can you (Marc) or anyone else suggest what might be the problem and how to
> fix it, or at least track it down a bit more explicitly?
>
> Here's my
<snip>
>
>
> Ta.
>
> cheers,
>
> Rolf
Rolf,
What do:
getOption("CRAN")
getOption("repos")
show?
Is there any chance that you have something set in ~/.Rprofile pertaining to
CRAN mirrors or are loading some packages that might conflict?
I would try it with a vanilla R session (e.g. 'R --vanilla').
If it works then, there is something getting loaded or set at session start
that may be conflicting.
Here is my default sessionInfo() when I first start R from the CLI:
R version 3.2.2 (2015-08-14)
Platform: x86_64-apple-darwin13.4.0 (64-bit)
Running under: OS X 10.11.1 (El Capitan)
locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods
[7] base
Regards,
Marc
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