[XeTeX] Change Math font

[Sven Siegmund]

Thanks a lot, Bruno,

that helped. I will be keep an eye on that changed math font. If it
will couse some trouble, I'll change it back.

S.


2008/3/15, Bruno Voisin <bvoisin at mac.com>:
> Le 15 mars 08 à 11:20, Sven Siegmund a écrit :
>
>
>  > I would like to change the font used for maths. I thought this would
>  > be done with the \setmathrm command. But It seems that \setmathrm has
>  > no effect on my document.
>
>
> Yes. What \setmathrm does is changing the font used for explicit
>  \mathrm comands, as in \mathrm{x}. It does not affect the fonts used
>  implicitly in maths for operators (like "sin"), letters (like "x") and
>  symbols (like \alpha).
>
>  In standard LateX, these are defined in fontmath.ltx, one of the files
>  read when building the LaTeX format. On your setup it should be at
>  something like:
>
>  D:\MiKTeX\tex\latex\base\fontmath.ltx
>
>  If I'm not mistaken, the default [math] option (and its opposite [no-
>  math]) of fontspec affects the font used for operators but not those
>  used for letters.
>
>  Specifically, to achieve what you want you must add to the preamble of
>  your document:
>
>  \SetSymbolFont{letters}{normal}{\encodingdefault}{\rmdefault}{m}{it}
>  \SetSymbolFont{letters}{bold}{\encodingdefault}{\rmdefault}{b}{it}
>
>  Beware though: by doing this, you're in for future trouble, since the
>  fonts used for letters in maths are not exactly the same as those used
>  for text: they are expected to have different characters at different
>  places.
>
>
>  > I can outquote it and it gets typeset the
>  > same:
>  >
>  > ---------
>  > \documentclass[a4paper,oneside]{article}
>  >
>  > \usepackage{xunicode} %handle unicode
>  > \usepackage{xltxtra} %XeTeX extras
>  > \usepackage{fontspec} %use OTF/TTF fonts
>  > \usepackage[ngerman]{babel} %german hyphenation
>  >
>  > \setmainfont{Adobe Garamond Pro} %use this font
>  > \setmathrm{Adobe Garamond Pro} %use this font for math
>  >
>  > \begin{document}
>  >
>  > $\sin{x}$
>  >
>  > sin {\textit x}
>  >
>  > $\sqrt{\sin{x}^2}$
>  >
>  > \end{document}
>  > ---------
>  >
>  > The argument of \sin is not set in Adobe Garamond Pro and how can I
>  > change that?
>  > What causes the \setmathrm command?
>  >
>  > I tried to fiddle with the [no-math] option described for fontspec
>  > package 1.14, but when I change the respective line in the preamble to
>  > \usepackage[no-math]{fontspec}, I get this error when compiling
>  > (MiKTeX, Windows XP):
>
>
> That's because xltxtra loads already the fontspec package, hence you
>  can't reload afterwards the fontspec package with options different
>  from those used when it was loaded the first time. Just invert the
>  order in which the packages are loaded:
>
>  \usepackage{xunicode} %handle unicode
>
>
>  \usepackage{fontspec} %use OTF/TTF fonts
>
> \usepackage{xltxtra} %XeTeX extras
>
>  Hope this helps,
>
>
>  Bruno Voisin
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