[R] CRAN library down? - UPDATE

[Jeff Newmiller]

a) You will help yourself and those who you attempt to communicate with if you learn the terminology correctly as described in the RcInstallation and Administration manual (e.g. RShowDoc("R-admin") or https://cran.r-project.org/doc/manuals/r-release/R-admin.html):

  1) Packages are collections of functions and documentation.
  2) Libraries are the directories _on our computers_ in which we keep packages that we want convenient access to.
  3) Repositories are directories of packages on internet servers from which we typically retrieve packages that we want to keep in our libraries.

b) There are many web servers that mirror the contents of the CRAN repository. They are operated as volunteer contributions to the R community. You have referenced one of them in your error message.

c) If you use your web browser to visit the URL you reported in your post then there is a message returned that explains what happened and offers a suggestion as to next steps you should take.

On May 2, 2020 7:18:53 PM PDT, Roger Coppock <rcoppock using cox.net> wrote:
>Recently a message appears when I try to view the index of the CRAN
>library.
>
>Warning: unable to access index for repository
>http://cran.cnr.Berkeley.edu/bin/macosx/contrib/4.0:
>cannot open URL
>'http://cran.cnr.Berkeley.edu/bin/macosx/contrib/4.0/PACKAGES'
>
>Does the CRAN library have the Coronavirus?
>
>- -  Roger Coppock (rcoppock using cox.net)
>
>> On May 1, 2020, at 9:24 AM, Roger Coppock <rcoppock using cox.net> wrote:
>> 
>> After I changed to Version R version 4.0.0 (2020-04-24) -- "Arbor
>Day" on my MacBook running Mac OS 10.13.6, I lost all my loaded
>libraries.  Also, the package installer can not contact CRAN libraries
>either for binaries or sources, to replace the missing loaded
>libraries.  The package installer can contact "BioConductor", however. 
>I am now specifically looking for "HURDAT" and "lmtest", which were on
>CRAN but not "BioConductor".
>> 
>> - -  Roger Coppock (rcoppock using cox.net)
>
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-- 
Sent from my phone. Please excuse my brevity.