[R-gui] tcltk troubleshooting on OS X

[Simon Urbanek]

Check your DISPLAY env var -- it defines which X11 to connect to. In your command line you have apparently set it to :0.0 while you don't have even X11 running so it will fail unless you start X11 yourself. When you request X11, Apple has some additional magic it offers to start X11 automatically - I wonder if that is broken on your system so it just hangs. That magic will show up as a path in the DISPLAY variable instead of the regular display specification. If in doubt, start X11 by hand and set DISPLAY to :0.0.

Cheers,
Simon

PS: This would be more appropriate on SIG-Mac instead...


> On Oct 28, 2015, at 11:41 AM, Seth Frey <moctodliamg at gmail.com> wrote:
> 
> Hello,
> 
> I have a strange problem with both R.app and RStudio.app.  Since it's
> a problem with both, I figure it's a problem with R or with my system,
> and that your expertises may offer some leads on how I can keep
> isolating the problem.
> 
> I've made it this far: when I run either capabilities() or
> library(tcltk), both GUI apps hang uninformatively and have to be
> force quit.  On the command line (via OS X Terminal), R does fine:
> """
>> library(tcltk)  ### shouldn't work, and doesn't, but doesn't crash/hang either
> Warning message:
> In fun(libname, pkgname) : couldn't connect to display ":0.0"
>> tcltk()
> Error: could not find function "tcltk"
>> capabilities()
>       jpeg         png        tiff       tcltk         X11        aqua
>       TRUE        TRUE        TRUE        TRUE       FALSE        TRUE
>   http/ftp     sockets      libxml        fifo      cledit       iconv
>       TRUE        TRUE        TRUE        TRUE        TRUE        TRUE
>        NLS     profmem       cairo         ICU long.double     libcurl
>       TRUE        TRUE        TRUE        TRUE        TRUE        TRUE
> """
> 
> So far, I've tried the following solutions:
> Update R
> Update RStudio
> Downgrade RStudio (to version 0.98.1091 from Nov 2014)
> And also,
>     after removing all of following:
>          /Library/Frameworks
>          /Library/Frameworks/R.framework
>          ~/Library/R
>          ~/Applications/RStudio.app
>          ~/Applications/R.app
>          ~/.rstudio-desktop .rstudio-desktop.bak
>          ~/.R
>          ~/.Rapp.history
>          ~/.Rhistory
>          ~/.Rprofile
>          and port uninstall R
>     I tried installing R clean from https://cran.r-project.org/bin/macosx/
>          and also removing it and installing R clean from Darwin
> Ports with the +tcltk variant
> 
> After all this, I'm still getting the mysterious hang in both R.app
> and RStudio.  I'm now out of guesses. I'm prepared to keep at it, but
> at this point I don't even know where to start to continue chasing the
> problem.
> 
> Thank you for your help.  If this isn't the right list to reach out
> to, please let me know who to ask instead.
> 
> best,
> seth.
> 
> ps. This isn't a problem with sqldf, but with a more obscure package,
> mwa, so the standard workaround for tcltk problems,
> options(gsubfn.engine = "R"), won't do. I need to be able to run:
> """
> install.packages("mwa")
> library(mwa)
> example(matchedwake)
> """
> This code should work fine on your machines (so it isn't a problem
> with the developer of mwa), but it hangs on mine at "library(mwa)"
> while loading required package tcltk.
> 
> pps., specs:
> """
>> sessionInfo()
> R version 3.2.2 (2015-08-14)
> Platform: x86_64-apple-darwin13.4.0 (64-bit)
> Running under: OS X 10.10.4 (Yosemite)
> 
> locale:
> [1] C
> 
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
> 
> loaded via a namespace (and not attached):
> [1] tools_3.2.2
> """
> 
> best,
> seth.
> 
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