[Rd] [FORGED] Re: Plotmath on Fedora 31 broken with with pango >= 1.44 - workarounds?

[Paul Murrell]

I am not seeing that problem on my 18.04 ...

 > sessionInfo()
R version 4.0.0 Patched (2020-05-12 r78431)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 18.04.4 LTS

Matrix products: default
BLAS:   /home/pmur002/R/R-4-0-branch/BUILD/lib/libRblas.so
LAPACK: /home/pmur002/R/R-4-0-branch/BUILD/lib/libRlapack.so

locale:
  [1] LC_CTYPE=en_NZ.UTF-8       LC_NUMERIC=C
  [3] LC_TIME=en_NZ.UTF-8        LC_COLLATE=en_NZ.UTF-8
  [5] LC_MONETARY=en_NZ.UTF-8    LC_MESSAGES=en_NZ.UTF-8
  [7] LC_PAPER=en_NZ.UTF-8       LC_NAME=C
  [9] LC_ADDRESS=C               LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_NZ.UTF-8 LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] compiler_4.0.0

Paul

On 26/05/20 2:21 pm, Kenny Bell wrote:
> Hi all,
> 
> I have found after upgrading to R 4.0.0 (among other upgrades so this may
> not be the cause) that the degree symbol doesn't work correctly on Ubuntu
> 18.04. Googling brought me to this thread that appears related.
> 
> I tried running:
> cairo_pdf()
> plot.new(); text(0.5,0.5, bquote(120*degree*N), cex=5)
> dev.off()
> 
> and the ubuntu plot has the degree symbol vertically in the center of the
> line. The Windows one correctly shows as superscript.
> 
> Anyone else see this behaviour?
> 
> Cheers,
> Kenny
> 
> On Fri, Apr 10, 2020 at 3:36 AM Nicolas Mailhot via R-devel <
> r-devel using r-project.org> wrote:
> 
>> Le mercredi 08 avril 2020 à 02:55 -0700, Gabriel Becker a écrit :
>>> Hi Paul,
>>
>> Hi Gabriel,
>>
>> Thanks a lot for the testing.
>>
>>> The various font family settings seem to work too, from what I can
>>> tell. Both font families you suggested, however, Helvetica and Apple
>>> Symbols (the s is important) have significantly incomplete coverage
>>> with PUA on.
>>
>> That is to be expected, the AMS symbol dump in PUA space was a quick
>> hack to make pre-unicode symbols available in an unicode world, pending
>> their normalisation.
>>
>> That standardisation is long past (IIRC it occured by unicode 3.2
>> released in March 2002), so no newly created/updated font family is
>> going to place those symbols in PUA anymore.
>>
>> Now adding the AMS symbols to new fonts has been slow, due to the large
>> amount of software hardcoding Symbol (and equivallent) and masking the
>> actual glyph userbase to font makers. It will accelerate with more apps
>> expecting plain unicode by default.
>>
>> Thanks for the testing!
>>
>> Regards,
>>
>> --
>> Nicolas Mailhot
>>
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>>
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-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul using stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/