roy@phri.UUCP (02/04/87)
I want to set the following fraction:
/
/ N +--- --+ 2
/ ---- | N! |
1 / \ | ---------- |
/ / | (N-n)!n! |
/ ---- +--- ---+
/ n = 0
but the best I can come up with is:
.EQ
up 30 1 over
{ down 30 { sum from { n ^ = ^ 0} to N
{ { left [ N! over { (N-n)!n! } right ] } sup size +2 2 }
} }
.EN
X
which gives you the --- form instead of the X / Y that I want (no comments
Y
about which is the "preferred" style, please). The problem is that I can't
figure out how to get the large-sized "/" in eqn. Is it possible, short of
doing something sick like "size 36 /"?
BTW, withough the "up/down 30" commands, the numerator and
demoninator run right into the fraction bar. Also, the superscript 2 comes
out too small unless I do the "size +2" stuff. Is this because I did
something wrong or is it an intrinsic eqn problem? Could it be badly
designed fonts? I did this on an Apple LaserWriter, using Times and
Adobe's transcript package (i.e. ptroff).
Presumably TeX has an easy way to do this; if somebody could show
we how to do it in TeX, without any religious flamage about TeX vs. troff,
I would appreciate that too.
--
Roy Smith, {allegra,cmcl2,philabs}!phri!roy
System Administrator, Public Health Research Institute
455 First Avenue, New York, NY 10016
"you can't spell deoxyribonucleic without unix!"scott@tg.UUCP (02/08/87)
In article <2590@phri.UUCP> roy@phri.UUCP (Roy Smith) writes: [equation picture deleted for space] >but the best I can come up with is: > > .EQ > up 30 1 over > { down 30 { sum from { n ^ = ^ 0} to N > { { left [ N! over { (N-n)!n! } right ] } sup size +2 2 } > } } > .EN > X >which gives you the --- form instead of the X / Y that I want (no comments > Y Try this: .EQ up 30 1 ~ left "/" ~ { down 30 { sum from { n ^ = ^ 0} to N { left [ N! over { (N-n)!n! } right ] } } right "" sup 2 .EN > BTW, withough the "up/down 30" commands, the numerator and >demoninator run right into the fraction bar. Also, the superscript 2 comes >out too small unless I do the "size +2" stuff. Is this because I did >something wrong or is it an intrinsic eqn problem? Disclaimer: The 'left "/"' might be a something hacked into the version of eqn I last looked at. The code is so bad looking that it is difficult to determine. If it works, you have it. The ~ move 1 em space while the ^ moves 1 en space. So if more room is needed, add more ~. The right "" should solve the space problems with the superscript. This is not a bug since all superscripts are designed to be (by default) 4 point sizes smaller than the text point size. If it doesn't work, add the size +2 again. If this does not work, drop me an email note and we can arrange to talk (I'm in NY). Scott Barman {philabs, pyrnj}!tg!scott