"John Fox" <j...@mcmaster.ca> writes: > Dear Jordan, > > I'm not looking for an R package, I'm looking for the pdflatex program.
Isn't there an R package which requires latex? You might find one and check how it is done there? knitr[1] comes to mind? Please post your findings here as it is an interesting question (not only for latex). Cheers, Rainer > > Best, > John > > On Sun, 15 Mar 2015 21:17:53 -0400 > Jordan Meyer <jordanmeyer1...@gmail.com> wrote: >> You may wish to try using the logical.return argument of library(). If it >> returns TRUE, you could use find.package() to locate the package you are >> looking for. For example: >> >> > library(package = "BEST", logical.return = TRUE) >> Loading required package: rjags >> Loading required package: coda >> Linked to JAGS 3.4.0 >> Loaded modules: basemod,bugs >> [1] TRUE >> > find.package(package = "BEST") >> [1] "/Library/Frameworks/R.framework/Versions/3.1/Resources/library/BEST" >> >> On Sun, Mar 15, 2015 at 6:21 PM, John Fox <j...@mcmaster.ca> wrote: >> >> > Dear Ian, >> > >> > Thanks for this. Please see below: >> > >> > > -----Original Message----- >> > > From: Ian Gow [mailto:iand...@gmail.com] >> > > Sent: March-15-15 5:07 PM >> > > To: John Fox >> > > Cc: r-sig-mac@r-project.org >> > > Subject: Re: [R-SIG-Mac] checking for pdflatex >> > > >> > > I think it's driven by the PATH variable, which appears to differ for me >> > > between RStudio and R from Terminal on the one hand and R.app on the >> > > other. >> > >> > Yes, I understand that, though I don't understand why there's a difference >> > in the path. >> > >> > > >> > > > Sys.getenv("PATH") >> > > [1] "/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin" >> > > > Sys.which("pdflatex") >> > > pdflatex >> > > "" >> > > >> > > If I add >> > > >> > > Sys.setenv(PATH=paste(Sys.getenv("PATH"),"/opt/local/bin", sep=":")) >> > > >> > > to ~/.Rprofile then R.app finds pdflatex (from MacPorts in my case). >> > > >> > > > Sys.which("pdflatex") >> > > pdflatex >> > > "/opt/local/bin/pdflatex" >> > > > Sys.getenv("PATH") >> > > [1] "/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/local/bin" >> > >> > The problem for me is to determine whether pdflatex is installed *without* >> > knowing in advance where it's installed. I haven't described the purpose of >> > this, and, in the interest of brevity, won't for the time-being, but it may >> > also prove necessary to determine where pdflatex resides. >> > >> > Best, >> > John >> > >> > > >> > > >> > > On 15 Mar 2015, at 16:46, John Fox wrote: >> > > >> > > > Dear list members, >> > > > >> > > > I need to determine whether pdflatex is installed and have been doing >> > > > that via Sys.which("pdflatex"). This works when R is run in a terminal >> > > > window (or in RStudio): >> > > > >> > > > > Sys.which("pdflatex") >> > > > pdflatex >> > > > "/usr/texbin/pdflatex" >> > > > >> > > > but not from R.app: >> > > > >> > > > > Sys.which("pdflatex") >> > > > pdflatex >> > > > "" >> > > > >> > > > The session info is the same in both cases: >> > > > >> > > > -------------- snip ---------------- >> > > > >> > > >> sessionInfo() >> > > > R version 3.1.3 (2015-03-09) >> > > > Platform: x86_64-apple-darwin13.4.0 (64-bit) Running under: OS X >> > > > 10.10.2 (Yosemite) >> > > > >> > > > locale: >> > > > [1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF- >> > > 8 >> > > > >> > > > attached base packages: >> > > > [1] stats graphics grDevices utils datasets methods base >> > > > >> > > > -------------- snip ---------------- >> > > > >> > > > Why is the result different? Is there a better way to check for the >> > > > presence of pdflatex? >> > > > >> > > > Any help would be appreciated. >> > > > >> > > > Thanks, >> > > > John >> > > > >> > > > ------------------------------------------------ >> > > > John Fox, Professor >> > > > McMaster University >> > > > Hamilton, Ontario, Canada >> > > > http://socserv.mcmaster.ca/jfox/ >> > > > >> > > > _______________________________________________ >> > > > R-SIG-Mac mailing list >> > > > R-SIG-Mac@r-project.org >> > > > https://stat.ethz.ch/mailman/listinfo/r-sig-mac >> > >> > >> > --- >> > This email has been checked for viruses by Avast antivirus software. >> > >> > _______________________________________________ >> > R-SIG-Mac mailing list >> > R-SIG-Mac@r-project.org >> > https://stat.ethz.ch/mailman/listinfo/r-sig-mac >> > > > ------------------------------------------------ > John Fox, Professor > McMaster University > Hamilton, Ontario, Canada > http://socserv.mcmaster.ca/jfox/ Footnotes: [1] http://yihui.name/knitr/ -- Rainer M. Krug email: Rainer<at>krugs<dot>de PGP: 0x0F52F982
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