[R] Issue when trying to install or load packages in RStudio

[Paul Bernal]

Dear Jeff and R friends,

I fixed the issue. The problem was due to the fact that I had R version
4.1.2 and installed  the newer version R 4.2. Since RStudio automatically
points to the latest R version installed, there were a lot of packages that
were not installed.

I just made RStudio point to an older R version and the issue was solved.

Cheers,
Paul
El El vie, 13 de may. de 2022 a la(s) 9:35 a. m., Jeff Newmiller <
jdnewmil using dcn.davis.ca.us> escribió:

> A) You are repeatedly referring to RStudio... if you have a problem with
> RStudio, it is off-topic here and most people won't know how to fix it.
> RStudio occasionally gets out of sync with R and (the majority of us) don't
> keep track of that status here.
>
> Assuming the problem is with R (you confirm this by using R or RGui
> directly and seeing the same errors)...
>
> B) When the R error messages say they cannot find the index, then that
> means you either have the wrong CRAN mirror URL (there is a whole list of
> them you can try) or there is some kind of network storm that will blow
> over if you try again later.
>
> C) Finally, Rtools is not an R package... you will never succeed
> installing Rtools using install.packages. Use your web browser to look on
> CRAN for Rtools42 software and download the corresponding Windows setup
> program and run it. You should read and follow the instructions [1]. I am
> pretty sure you will need to re-start R so it will find Rtools.
>
> [1] https://cran.r-project.org/bin/windows/Rtools/rtools42/rtools.html
>
> On May 13, 2022 6:38:29 AM PDT, Paul Bernal <paulbernal07 using gmail.com>
> wrote:
> >Dear friends,
> >
> >Hope you are doing great. I have installed R version 4.2.0 and
> >RStudio 2022.02.2 Build 485 "Prairie Trillium" Release (8acbd38b,
> >2022-04-19) for Windows.
> >
> >Last week, I developed a model in RStudio and was able to install and load
> >many packages, but now RStudio is behaving oddly.
> >
> >I get the following errors whenever I try installing packages(which was
> not
> >happening to me last week):
> >
> >https://cran.rstudio.com/bin/windows/Rtools/
> >Warning in install.packages :
> >  unable to access index for repository
> https://cran.rstudio.com/src/contrib
> >:
> >  cannot open URL 'https://cran.rstudio.com/src/contrib/PACKAGES'
> >Warning in install.packages :
> >  package ‘Rtools’ is not available for this version of R
> >
> >A version of this package for your version of R might be available
> >elsewhere,
> >see the ideas at
> >
> https://cran.r-project.org/doc/manuals/r-patched/R-admin.html#Installing-packages
> >Warning in install.packages :
> >  unable to access index for repository
> >https://cran.rstudio.com/bin/windows/contrib/4.2:
> >  cannot open URL '
> https://cran.rstudio.com/bin/windows/contrib/4.2/PACKAGES
> >'
> >
> >I try to install Rtools but was not able to.
> >
> >Any clues on what could be happening?
> >
> >Best regards,
> >Paul
> >
> >       [[alternative HTML version deleted]]
> >
> >______________________________________________
> >R-help using r-project.org mailing list -- To UNSUBSCRIBE and more, see
> >https://stat.ethz.ch/mailman/listinfo/r-help
> >PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> >and provide commented, minimal, self-contained, reproducible code.
>
> --
> Sent from my phone. Please excuse my brevity.
>

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