Re: [Doxygen-users] Controlling the size of the equation fonts?

[Jens S. <jen...@hr...>]

Dear Ted, 

you can use one of the LaTeX macros
 
  \displaystyle
  \textstyle
  \scriptstyle
  \scriptscriptstyle

to change the size of a  formula.  The  commands  \large, \Large,
\Huge, ... cannot be used in math mode:

  LaTeX Font Warning: Command \Large invalid in math mode on input line 4.

but  it's  possible  to  use these before entering the math mode.
Nevertheless I do not recommend it. LaTeX was developed with help
of  typesetters  and  creates  beautiful documents. Do you really
want to change this? (Formulas such as \f$ \gamma, a_1, \dots \f$
look ugly if the font sizes differ in math and text mode.)

Please compare the LaTeX output of

  \documentclass{article}
  \begin{document}
  \[ b^0 + \frac{a^1}{b_1 +
            \frac{a^2}{b_2 +
             \frac{a^3}{b_3}}}
  \]

  \newcommand{\D}{\displaystyle}
  \[ b^0 + \frac{a^1}{\D b_1 +
            \frac{a^2}{\D b_2 +
             \frac{a^3}{b_3}}}
  \]
  \end{document}

(see "The LaTeX Companion", Goossens, Mittelbach,  Samarin,  sec-
tion 8.9).

If  you  want  to enlarge formulas in the html output, you should
prefer an external program, such as convert (belongs to the  free
ImageMagick).  This  is  available  at most Linux machines and is
simple to use:

  convert -geometry 150% form_2.png form_2_large.png

I think it's not a good idea to integrate  your  patch  into  the
doxygen  main  line. There are already too many configuration op-
tions, there's no need for a new one (don't  forget  that  nobody
requested  this  feature  before). Maybe it's possible to collect
these patches (and other doxygen related patches) somewere?

Regards,
Jens

On Thu, 6 Jun 2002, Ted Drain wrote:

> All,
> I'm using the \f[ \f] and \f$ commands to embed equations in my documentation.  I need to view those equations in HTML and latex formats.
> 
> Is there any way to control the size of the font used to generate the equations?  I have a lot of subscripts and I need the font size to be larger that the default.  Otherwise, it's very difficult to read the HTML version of the equations.
> 
> I tried putting \large and other latex font size commands in various places but it doesn't work.  I can manually add the \large command to the tex output and then when I run 'make ps', the ps file has the larger fonts in it. 
> 
> For example, if I embed the following equation:
> // \f[
> // \vec{F_f} = F \left( t - t_0 \right)  \hat{u} \left( t \right)
> // \f]

Hint: There's no need to use \left and right in this formula.
\vec{F_f} = F(t-t_0)\hat{u}(t) is easier to read and creates the same 
output.
 
> I've tried prefixing it with various tex font commands like this:
> // \f[ \large
> 
> // \f[ { \large
> 
> // \f[ \large {
> 
> From my experiments with the .tex files, it looks like I need the font spec outside the formula [] brackets.  Anyone have any ideas how I could get doxygen to put it there before generating the png files?
> 
> Thanks,
> Ted