[Rd] font inclusions in pdf files

[Paul Murrell]

Hi


ivo welch wrote:
> I am stumbling into external font issues here and there.  I presume using
> external lucida fonts is fairly rare, so I am more likely to stumble onto
> issues here.  (of course, I often think I have stumbled onto bugs/features
> that are not.)  So, I hope I am not imposing by reporting the following.
> 
> [1] can R please not include fonts that it is not using?
> 
> luafmfiles <- c("/usr/share/texmf/fonts/afm/yandy/lubright/lbr.afm",
>                 "/usr/share/texmf/fonts/afm/yandy/lubright/lbd.afm",
>                 "/usr/share/texmf/fonts/afm/yandy/lubright/lbi.afm",
>                 "/usr/share/texmf/fonts/afm/yandy/lucida/lbc.afm",
>                                 #
> "/usr/share/texmf/fonts/afm/yandy/lumath/lbms.afm",
>                 "/usr/share/texmf/fonts/afm/yandy/lubright/lbr.afm")
> grDevices::postscriptFonts(lucida=grDevices::postscriptFont("Lucida",
> metrics=luafmfiles));
> pdf(file="testincfonts.pdf");
> par(family="lucida");
> plot( c(0,0), c(1,1) );
> dev.off();
> 
> # pdffonts testincfonts.pdf
> name                                 type         emb sub uni object ID
> ------------------------------------ ------------ --- --- --- ---------
> ZapfDingbats                         Type 1       no  no  no       5  0
> Helvetica                            Type 1       no  no  no      10  0
> Helvetica-Bold                       Type 1       no  no  no      11  0
> Helvetica-Oblique                    Type 1       no  no  no      12  0
> Helvetica-BoldOblique                Type 1       no  no  no      13  0
> Symbol                               Type 1       no  no  no      14  0
> LucidaBright                         Type 1       no  no  no      15  0
> LucidaBright-Demi                    Type 1       no  no  no      16  0
> LucidaBright-Italic                  Type 1       no  no  no      17  0
> LucidaCalligraphy-Italic             Type 1       no  no  no      18  0
> LucidaBright                         Type 1       no  no  no      19  0
> 
>     distill from testincfonts.pdf into testincfonts.pdf.pdf to see what is
> really used:
> 
> # pdffonts testincfonts.pdf.pdf
> name                                 type         emb sub uni object ID
> ------------------------------------ ------------ --- --- --- ---------
> KWYJNC+LucidaBright                  Type 1C      yes yes no       9  0
> 
> (Including unused fonts can trip up programs that check whether pdf
> documents have embedded all fonts, and which are not smart enough to typeset
> [incl. all recursively embedded pdf files] to realize when a font is never
> used.)


Helvetica is being included because it is the default font for the 
device.  Changes for R 2.3.0 will mean that it is possible to specify 
something non-standard like Lucida as the default font for the device. 
However, it's going to require more work to get rid of Zapf Dingbats 
because R always includes it for drawing small circles.

Paul
-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/