[ESS] graphics window for TRAMP sessions

[Tyler Smith]

Thanks everyone for your suggestions. 

I was unable to get this to work, despite setting my local `.ssh/config` settings, the remote `/etc/ssh/ssh_config` as directed (and restarting the remote ssh daemon for good measure), and also adding the DISPLAY value to `tramp-remote-process-environment`.

When I do this, trying `plot(1:10)` from the ESS R terminal, I get the error:

```
No protocol specified
Error in .External2(C_X11, d$display, d$width, d$height, d$pointsize,  : 
  unable to start device X11cairo
In addition: Warning message:
In (function (display = "", width, height, pointsize, gamma, bg,  :
  unable to open connection to X11 display ''
```

However, plotting works just fine if I do instead:

- M-x shell
- ssh remotehost
- R
- M-x ess-remote

So I guess the problem is solved, although I don't know why the non-`ess-remote` approach doesn't work for me when it clearly does for several others.

Thanks again,

Tyler

--
plantarum.ca



On Sat, May 21, 2022, at 2:28 AM, Chris Wallace wrote:
> You can set the -X in your .shh/config. Use
> 
> Host *
> ForwardX11 yes
> 
> https://chr1swallace.github.io
> 
> *From:* ESS-help <ess-help-bounces using r-project.org> on behalf of Tyler Smith via ESS-help <ess-help using r-project.org>
> *Sent:* Friday, May 20, 2022 8:51:38 PM
> *To:* ESS-help <ess-help using r-project.org>
> *Subject:* [ESS] graphics window for TRAMP sessions 
>  
> Hi,
> 
> I'm working on a remote machine. I load my script file via `C-x C-f /ssh:host:file.Rmd`. When I run code from the code blocks, it starts a session on the remote machine, no problems. However, if I do a plot, nothing happens. Or at least nothing is displayed.
> 
> I've been working around this by creating a jpeg file for each of my plots on the remote machine, then opening the file this creates to view the image.
> 
> I wonder: is it possible to use ESS/TRAMP in a way that allows the remote R session to display a graphics window on my local machine? Without Emacs, I can do this via `ssh -X`, is there a way to tell TRAMP to use the `-X` flag? Or is this possible with ESS-remote instead of TRAMP?
> 
> Thanks for any suggestions,
> 
> Tyler
> 
> -- 
> plantarum.ca
> 
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