Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!helios!tamsun.tamu.edu!jdm5548
From: jdm5548@tamsun.tamu.edu (James Darrell McCauley)
Newsgroups: comp.text.tex
Subject: Re: extra space in eqnarray
Message-ID: <14625@helios.TAMU.EDU>
Date: 13 Apr 91 16:34:52 GMT
References: <9573@castle.ed.ac.uk>
Sender: usenet@helios.TAMU.EDU
Organization: Ag Engineering Dept, Texas A&M University
Lines: 29

In article <9573@castle.ed.ac.uk>, ian@castle.ed.ac.uk (Ian Turton) writes:
|> I have a serries of equations in an eqnarray, I want to put some extra space
|> between them, however if I just put in a blank line Latex numbers this as if
|> it was an equation, which isn't the desired effect! 
|> 
|> Can anyone suguest a way to do this?

First, please read the manual.  In the index, under eqnarray, the last
item says "space between rows in, 170"  

to quote p. 170 under Style Parameters:
 \jot The amount of extra vertical space added between rows in an eqnarray
      or eqnarray* environment.

Therefore, \addtolength{\jot}{2\jot} will double the space between equations
in these environments.

Alternatively, try to \nonumber command:

\begin{eqnarray}
 x & = & y \\
   &   & \nonumber \\
 a & = & b \\
\end{eqnarray}

-- 
James Darrell McCauley, Grad Res Asst, Spatial Analysis Lab 
Dept of Ag Engr, Texas A&M Univ, College Station, TX 77843-2117, USA
(jdm5548@diamond.tamu.edu, jdm5548@tamagen.bitnet)