[R] Another X11 problem. (Psigh!)

[Rolf Turner]

Tried to do a plot just now and got an error:

Error in text.default(2, 6, main, cex = cex) :
   X11 font -adobe-helvetica-%s-%s-*-*-%d-*-*-*-*-*-*-*, face 1 at size 
16 could not be loaded

This is reproducible (in my current environment) via:

par(mfrow=c(2,2))
plot(1:10)
text(2,6,"Oh, hell!",cex=2)

This is of course not the real context in which the error originally
manifested itself.  The "real context" triggered no such problems
until I started messing about trying to solve the "inconsolata" font
problem that I posted about recently.

Can anyone tell me (in simple comprehensible terms, please) how I might
make the required font available so that it can be loaded?  I reiterate,
please keep it simple.  I find fonts toadally incomprehensible!

Note that I did  as I was advised and installed texlive-2012 for Fedora 17
following the instructions detailed in the website that was given (and which
I cited in my previous email).  Didn't help a bit.

For what it's worth, here is my session info:
> sessionInfo()
> R version 2.15.2 Patched (2012-11-15 r61122)
> Platform: x86_64-unknown-linux-gnu (64-bit)
>
> locale:
>  [1] LC_CTYPE=en_US.UTF-8       LC_NUMERIC=C
>  [3] LC_TIME=en_US.UTF-8        LC_COLLATE=en_US.UTF-8
>  [5] LC_MONETARY=en_US.UTF-8    LC_MESSAGES=en_US.UTF-8
>  [7] LC_PAPER=C                 LC_NAME=C
>  [9] LC_ADDRESS=C               LC_TELEPHONE=C
> [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods base
>
> other attached packages:
> [1] spatstat_1.30-0 deldir_0.0-21   mgcv_1.7-22     misc_0.0-15
>
> loaded via a namespace (and not attached):
> [1] grid_2.15.2     lattice_0.20-10 Matrix_1.0-10   nlme_3.1-105
> [5] tools_2.15.2

     cheers,

         Rolf Turner