Sent from my iPhone

> On Feb 23, 2024, at 18:19, Sorkin, John <jsor...@som.umaryland.edu> wrote:
> 
> David,
> 
> I greatly appreciate the explanation you gave regarding R tools providing 
> tools available in Linux distros, but not found in Windows. (I am using a 
> windows system). Does this mean that Linux users don't need to use R tools 
> when they want to compile R code. 

Yes. That’s been true for me anyway. On a Mac I need to make sure I have the 
proper C and Fortran compilers and the proper environment variables , which are 
always provided by Saint  Simon Urbanek at the att.research site. 

— 
David. 
> 
> Additionally, thank you for the information about what I should read. I will 
> look at the material again, and hopefully things the material you suggest I 
> read will be more understandable.
> 
> John
> 
> P.S. This email should be in txt format, not html. I sent if from my desktop 
> windows machine which provides more options than does my iPhone.
> 
> 
> 
> John David Sorkin M.D., Ph.D.
> Professor of Medicine, University of Maryland School of Medicine;
> Associate Director for Biostatistics and Informatics, Baltimore VA Medical 
> Center Geriatrics Research, Education, and Clinical Center;
> PI Biostatistics and Informatics Core, University of Maryland School of 
> Medicine Claude D. Pepper Older Americans Independence Center;
> Senior Statistician University of Maryland Center for Vascular Research;
> 
> Division of Gerontology and Paliative Care,
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> Cell phone 443-418-5382
> 
> 
> 
> 
> ________________________________________
> From: David Winsemius <dwinsem...@comcast.net>
> Sent: Friday, February 23, 2024 8:14 PM
> To: Sorkin, John
> Cc: avi.e.gr...@gmail.com; r-help@r-project.org
> Subject: Re: [R] Rtools and things dependent on it
> 
> 
> On 2/23/24 16:28, Sorkin, John wrote:
> David,
> My apologies regarding the format of my email. I am replying using my iPhone, 
> and I can’t find a way to switch from what I suspect is html to txt format.
> The link you sent told me that R tools allows compilation of code.
> 
> 
> It's specifically designed to provide the code tools missing in Windows that 
> would other wise have been provided by a typical Linux distro. More 
> expansively, it allows compilation of code written in C and/or Fortran using 
> the version that was used to build the matching R version and allows it to be 
> called by the routines written in R that bind a package together.
> 
> This is good to know, but beyond this important fact, the rest of the 
> material was close to unintelligible.
> 
> The phrase "the rest of the material" is not specific enough to offer more 
> explanation. You should quote material that is beyond your understanding. You 
> should only be reading the sections named: "Installing Rtools43" and 
> "Building packages from source using Rtools43". I doubt that material further 
> on would be relevant.
> 
> --
> 
> David
> 
> I doubt this is the fault of the author, it is probably because I lack some 
> basic knowledge. Can you suggest some more basic material I can read. Please 
> note. I am not computer naive, I am simply missing basic knowledge of the 
> material discussed in the web page.
> Thank you,
> John
> John David Sorkin M.D., Ph.D.
> Professor of Medicine
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology and 
> Geriatric Medicine
> Baltimore VA Medical Center
> 10 North Greene Street<x-apple-data-detectors://12>
> GRECC<x-apple-data-detectors://12> (BT/18/GR)
> Baltimore, MD 21201-1524<x-apple-data-detectors://13/0>
> (Phone) 410-605-711<tel:410-605-7119>9
> (Fax) 410-605-7913<tel:410-605-7913> (Please call phone number above prior to 
> faxing)
> 
> On Feb 23, 2024, at 7:01 PM, David Winsemius 
> <dwinsem...@comcast.net><mailto:dwinsem...@comcast.net> wrote:
> 
> 
> On 2/23/24 14:34, avi.e.gr...@gmail.com<mailto:avi.e.gr...@gmail.com> wrote:
> This may be a dumb question and the answer may make me feel dumber.
> 
> I have had trouble for years with R packages wanting Rtools on my machine
> and not being able to use it. Many packages are fine as binaries are
> available. I have loaded Rtools and probably need to change my PATH or
> something.
> 
> 
> I suppose making sure that whatever directory holds your Rtools code is
> on your path would be a good idea. I wondered if there's an environment
> variable that could be set, but reading the page on using Rtools did not
> mention one until I got down to the section on building R from source
> which is surely NOT what you want to do.. You should read the
> information on installation and building packages from source.
> https://cran.r-project.org/bin/windows/base/howto-R-devel.html<https://cran.r-project.org/bin/windows/base/howto-R-devel.html>
>  which
> includes this sentence:
> 
> "It is recommended to use the defaults and install into|c:/rtools43|.
> When done that way, Rtools43 may be used in the same R session which
> installed it or which was started before Rtools43 was installed."
> 
> 
> But I recently suggested to someone that they might want to use the tabyl()
> function in the janitor package that I find helpful. I get a warning when I
> install it about Rtools but it works fine. When they install it, it fails. I
> assumed they would get it from CRAN the same way I did as we are both using
> Windows and from within RSTUDIO.
> 
> In the past, I have run into other packages I could not use and just moved
> on but it seems like time to see if this global problem has a work-around.
> 
> And, in particular, I have the latest versions of both R and RSTUDIO which
> can be a problem when other things are not as up-to-date.
> 
> Or, maybe some people with R packages could be convinced to make binaries
> available in the first place?
> 
> Binaries are automatically produced by CRAN but perhaps you are trying
> to install from some other source? It would help if you could be
> specific about several missing pieces of information: Operating system,
> R version, Rtools version, current location of Rtools, names of packages
> and where they were obtained.
> 
> 
> Regards and good luck;
> 
> David (a.k.a IRTFM)
> 
> Avi
> 
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> 
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