[Rcpp-devel] grDevices issue with RInside

[Dirk Eddelbuettel]

Hi Jonathon,

On 15 August 2017 at 19:46, Jonathon Love wrote:
| i'm having an issue with grDevices, but the issue only seems to appear 
| when i using my library with RInside on windows.
| 
| one of the packages we use (ggjoy) calls the grDevices::pdf() function, 
| which tries to load the enc/WinAnsi.enc file from grDevices package. 
| however, as can be seen here
| 
| https://jona.thon.love/rinside.png
| 
| it doesn't look relative to the R_HOME, but to `C:\`.
| 
| fossicking through the grDevices source code, i find this:
| 
| https://github.com/wch/r-source/blob/b7e8221be0266371b5b12e3549cf052c1eed10bc/src/library/grDevices/src/devPS.c#L507
| 
| suggesting that the value of this R_Home variable is an empty string
| 
| however, the R_HOME environmental variable is set appropriately, and 
| calling any number of the `R.home()`, `Sys.getenv('R_HOME')` return the 
| expected value. further, this particular installation is used by tens of 
| thousand of users, and produces plots fine ... this is the only 
| exception we've found so far.
| 
| you don't have any intuitions as to what may be the problem here, and 
| how we could work around it?

Might it be that you are shooting the messenger? You see the issue via
RInside as you implemented it via RInside.

But we "merely" give you access to the embedded R instance, and methinks that
the issue may be with ggjoy and/or the pdf() device. Are you really sure RInside
plays any part here?

Dirk

-- 
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org