# [pdftex] Han The Thanh's thesis on microtypography

Guy Worthington guyw at multiline.com.au
Sun Jun 1 17:13:37 CEST 2003

Hans Hagen wrote:
> One thing that you can try do do with the palatino is the following.
>
> \setbox0=\hbox{-} \showthe\wd0
>
> \dimen0=1em       \showthe\dimen0
>
> do this for both cmr and palatino.
>
> this gives you an idea of where the differences are.
>
Hans, sorry for tailing on to your previous message.  My mail reader
is a having a fit of pique.  I tried your suggestion of displaying the
font metrics of a hyphen' and the dimension of an em', using the
following code:

%--------------------------------------------------
\noindent Collecting font metrics for \fontname\font

\setbox0=\hbox{-}
character hyphen (-) has width \the\wd0

\dimen0=1em
dimension em has width \the\dimen0

\bigskip

\font\palatinofont = pplr at 10pt
\palatinofont

\noindent Collecting font metrics for \fontname\font

\setbox0=\hbox{-}
character hyphen (-) has width \the\wd0

\dimen0=1em
dimension em has width \the\dimen0

\bye
%--------------------------------------------------

The result (after filtering through GSview's text extract tool) is
shown below:

Collecting font metrics for cmr10
character hyphen (­) has width 3.33333pt
dimension em has width 10.00002pt
Collecting font metrics for pplr
character hyphen (­) has width 3.33pt
dimension em has width 10.0pt

Would this be the first group? the group of invariant metrics.

After gathering all the invariant metrics, I guess I then search for
metrics, that when compared, have a small variation,  and so on, until
I've graded the two fonts.  Apart from the 40 characters that Thanh
defines, are there any other principal metrics, that I should be
searching for?

I'll play with this for a while, and see if I can get results similar