LaTeX Double Spacing

Question

I am using the acm LaTeX template and I have trouble making my paper double spaced.

My LaTeX document looks like the following:

\documentclass{acm_proc_article-sp}
\usepackage{setspace}
\doublespacing
\begin{document}
...
\end{document}

When I compile the above document using pdflatex, I get the following error message on the line that I use the command \doublespacing:

Missing number, treated as zero \doublespacing

Answer 1

I believe you want to use \usepackage{doublespace} to double-space your document. To put in a block of singlespacing, surround it with \begin{singlespace} and \end{singlespace}.

Ref: http://web.mit.edu/olh/Latex/ess-latex.html

Answer 2

It looks like the acm_proc_article-sp class does some funky things that confuses the setspace package. In the preamble of your .tex document, add the following lines:

% Redefines \@ptsize to make setspace happy
\makeatletter
\renewcommand{\@ptsize}{0}
\makeatother

% Double-spaces the entire document
\usepackage{setspace}
\doublespacing

I have no idea why the acm_proc_article-sp class redefines \@ptsize to be empty.

Answer 3

The acm_proc_article-sp class seems to redefine \@ptsize to be empty for some reason. I don't know what \@ptsize is used for, so I don't want to mess with it. Using the \show command (see link text for more on this fantastic command), I see that \doublespacing is unpacked into

\setstretch{1.667} \ifcase \@ptsize \relax \setstretch{1.667} \or 
\setstretch{1.618} \or \setstretch{1.655}\fi

In other words, \doublespacing is essentially equivalent to \setstretch{1.667}, with slightly different stretch factors if \@ptsize happens to be 1 or 2. So I think the most unobtrusive solution to your problem is replace \doublespacing by \setstretch{1.667}.

\documentclass{acm_proc_article-sp}
\usepackage{setspace}
\setstretch{1.667}
\begin{document}
...
\end{document}

Answer 4

\linespread{2} should work. Doesn't need any packages, as far as I can tell, and you could change it to 1.9-spacing or 2.1-spacing, if you felt like it...

Answer 5

Don't do it. You need to follow the ACM conference proceedings article submission instructions, which don't want you to double-space the article anyway.

Answer 6

I just tried out this command (in my preamble) for double spacing and it worked fine:

\usepackage{setspace}
\setstretch{2}