[R] some CRAN mirrors not accessible

Patrick Giraudoux patrick.giraudoux at univ-fcomte.fr
Sun Dec 11 19:36:40 CET 2011

Le 11/12/2011 18:57, Prof Brian Ripley a écrit :
> First, see the status links in the first para of
> http://cran.r-project.org/mirrors.html .  So it seems that the issue 
> is not that the mirror is not accessible, but the part you are looking 
> for is not current/available.

yes indeed. For one "R for Windows" > "contrib"  deny access, and for 
the other has no 2.14/ folder

> Second, the mirror list is
> http://cran.r-project.org/CRAN_mirrors.csv
> and that lists the maintainers.  It is also in your R distribution, in 
> directory 'doc' (but that is as old as your distribution, and mirrors 
> do change).

Got it ! Thanks. Also fubbling in the chooseCRANmirror() doc I also 
discovered that  getCRANmirrors() returns a data.frame with the 
maintainer address; looking into the function it either straight  reads 
http://cran.r-project.org/CRAN_mirrors.csv, and if no connection reads 
de csv file stored in the local directory 'doc'.

Now the info about accessibility/availability has been conveyed to the 

Thanks again,

> On 11/12/2011 17:43, Patrick Giraudoux wrote:
>> Dear all,
>> Since some weeks, look like the following CRAN mirrors are no longer
>> accessible for package update:
>> http://cran.univ-lyon1.fr
>> http://mirror.ibcp.fr/pub/CRAN/
>> > update.packages(ask='graphics',checkBuilt=TRUE)
>> Warning: unable to access index for repository
>> http://cran.univ-lyon1.fr/bin/windows/contrib/2.14
>> update.packages(ask='graphics',checkBuilt=TRUE)
>> Warning: unable to access index for repository
>> http://mirror.ibcp.fr/pub/CRAN/bin/windows/contrib/2.14
>> Furthermore, attempting to connect via a web browser gives
>> However, I don't know how to get in touch with the webmasters in charge.
>> Any idea about hos to signal the trouble ?
>> PG
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