Path: utzoo!attcan!uunet!mcvax!ukc!dcl-cs!nott-cs!dao
From: dao@cs.nott.ac.uk (David Osborne)
Newsgroups: comp.text
Subject: Re: dvi2ps hacking
Summary: magnification and resolution
Keywords: TeX, magstep, resolution
Message-ID: <3638@robin.cs.nott.ac.uk>
Date: 20 Sep 88 14:26:14 GMT
References: <29544@bbn.COM>
Reply-To: dao@cs.nott.ac.uk (David Osborne)
Organization: Cripps Computing Centre, Nottingham University, UK
Lines: 37

In article <29544@bbn.COM> jzavgren@bbn.com (John Zavgren) writes:
>  Last week I posted a plea for help in getting a new version of dvi2ps running.
>The problem is in "the suffix" not
>the "preefix". amsy10.100 is odd-sounding to my machine because there
>are no font files that end in ".1000". None. 
>
>  Has there been a renaming or reorganization of font files while I was
>asleep? If so, shall I rebuild the whole system so it is up to date. Or,
>shall I just hack up the code for dvi2ps so it works? 

the numeric suffixes (or prefixes, depending on how your font
directory tree is arranged) relate to the resolution and magnification
of the font.  TeX allows use of magnified fonts and the mag factor
is conventionally multiplied by 1000, but this is also conventionally
expressed in terms of fonts for 200 dots-per-inch output devices.
thus, "amsy10.1000" is the `Almost Modern' Symbol font with font_height
of 10 points, unmagnified (magnification = 1), for a 200 dpi printer.

if this were for a 300 dpi device, as is now more common, the "1000"
would become "1500" ( 300/200 * 1000 ).  TeX's usual increments of
powers of 1.2 in the magnification (\magstep1, \magstep2) then produce
suffixes like 1800, 2160 and so on
( 1643 for \magstep0.5 ... i.e. 1500 * sqrt(1.2) )

check the resolution that your dvi2ps is looking for...
sounds like it's trying to use fonts for a 200 dpi printer.

dave.
-- 
David Osborne
Cripps Computing Centre, University of Nottingham, Nottingham NG7 2RD, UK
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