nrp1@rosemary.cs.reading.ac.uk (The HNT Corporation Chairman) (11/29/89)
Hello net.people, Does anyone know how to combine eqn and tbl, so as to produce a table of equations? I've tried using delimiters, but they don't appear to work! Any ideas will be welcome! This message was sent by ### ### n .. the HNT Corporation. ### ### / ) +----------------------+ ########-----+-+----- "There's half a pound | nrp1@rosemary@ | ######### X of Cadbury's Fruit & |uk.ac.reading.cs.onion| ### ### / \ . Nut in there!" +----------------------+ ### ### .' `._.'
jep@uxh.cso.uiuc.edu (John E. Prussing) (12/02/89)
I have used eqn and tbl together successfully. You need to use delimiters in the construction of the table, and use the tbl preprocessor first, ala tbl filename | eqn | troff =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--==-=-= John E. Prussing Internet: jep@uxh.cso.uiuc.edu Aeronautical & Astronautical Engineering BITNET: jep@uiucuxh University of Illinois at Urbana-Champaign UUCP: uunet!uiucuxc!uiucuxh!jep
jimr@hp-lsd.COS.HP.COM (Jim Rogers) (12/06/89)
To make eqn work inside tbl you must use test blocks.
For instance, try the following example:
.TS
delim ($$) center;
l l.
1 T{
$x=2 pi int sin ( omega t)dt$
T}
2 T{
$a+b over 2c = 1$
T}
3 T{
$A ~=~ left [ pile { a above b above c } ~~ pile { x above y above z } right ]$
.TE
The second column on each line begins with "T{". This begins a text block
in TBL. Every "T{" must be the last set of characters on a line.
The text block ends with "T}". Every "T}" must be the first set of
characters on a line.
Text blocks are very useful. I have been known to put entire grap ouputs
in a column using text blocks.
Jim Rogers
Hewlett Packard Logic Systems Division
Colorado Springs, Coloradojimr@hp-lsd.COS.HP.COM (Jim Rogers) (12/07/89)
Upon further study I find that text blocks, as useful as they are, are
**not** necessary for combining tbl and eqn.
The keys to this combination are explained in page 16 of the tbl
technical discussion in the book "UNIX (R) System V Documentor's
Workbench User's Guide" printed by Prentice Hall. This book is part of
the AT&T UNIX (R) System V series.
The most important issue in getting eqn and tbl to work together seems to
be the relative order in which they are invoked. The book states that
eqn should **always** be invoked after tbl on files which have equations
inside tables.
i.e
tbl foo.text | eqn | troff -mm
The example used in the book, which only works with the order shown above,
is:
.EQ
delim $$
.EN
.TS
doublebox;
c c
l l.
Name Definition
.sp
.vs +2p
Gamma $GAMMA (z) = int sub 0 sup inf t sup {z-1} e sup -t dt$
Sine $sin (x) = 1 over 2i ( e sup ix - e sup -ix )$
Error $roman erf (z) = 2 over sqrt pi int sub 0 sup z e sup {-t sup 2} dt$
Bessel $J sub 0 (z) = 1 over pi int sub 0 sup pi cos (z sin theta )d theta $
Zeta $ zeta (s) = sum from k=1 to inf k sup -s ~~( Re~s > 1)$
.vs -2p
.sp 2p
.TE
Sorry for the earlier misinformation.
Jim Rogerslee@sq.sq.com (Liam R. E. Quin) (12/14/89)
In article <7370004@hp-lsd.COS.HP.COM> jimr@hp-lsd.COS.HP.COM (Jim Rogers) writes: >Upon further study I find that text blocks, as useful as they are, are >**not** necessary for combining tbl and eqn. True. You might also like to know that you can do .EQ delim @% .EN instead of .EQ delim $$ .EN if you like. This has two big advantages. Firstly, you can define your own macros without worrying that a $ in a macro will confuse eqn e.g.: .de B \fB\&\\$1\fP\c .. This is not so important, as you can use .so to read a file of macros if you wany anyway. The real big win is that if you accidentaly omit a delimiter, as in We can see that $a sup 2 is much closer to $pi$ than... the rest of the document (up to a .EQ or .EN) gets inverted, so tht all of the eqn text comes out normal, and eqn looks at all of the other text... usually this causes syntax errors. If instead I had written We can see that @a sup 2 is much closer to @pi% than... then the effect would end at @pi$. Finally, note that whilst @ is OK for a start delimiter, % occurs in normal text, and is only ggod for the ending one. And # does not work at all, because tbl puts #-signs [pronounced `hash-signs' :-)] in its output. Lee [I was first shown the technique of using differing delimiters by David Epstein, in a paper written by Bill Thurston of Princeton] -- Liam R. Quin, Unixsys (UK) Ltd [note: not an employee of "sq" - a visitor!] lee@sq.com (Whilst visiting Canada from England, until Christmas) -- I think I'm going to come out at last... -- What? Admit you're not a fundamentalist Jew? They'll *crucify* you! :-)