# How do I change the label separator for marginfigure in Tufte Book/Handout?

I'm trying to use the caption package to do this and I've used the following code, but it's still not giving me a period as a label separator. How can I go about fixing this? Here's what I have:

    \documentclass[english,dotinlabels,nohyper,notoc]{tufte-handout}
\usepackage{babel}
\usepackage{hyperref}
\usepackage{caption}
\captionsetup[figure]{labelformat=simple, labelsep = period}
\captionsetup[marginfigure]{labelformat=simple, labelsep = period}

\begin{document}

\section{test}

\begin{figure}
\caption{erere}
\end{figure}

\vspace{20pt}

this is a test

\begin{marginfigure}
\caption{rerweaere}
\end{marginfigure}

\end{document}


As indicated below, it works for figure, but not margin figure:

-

You can redefine marginfigure to include the change in the caption formatting:

\documentclass[english,dotinlabels,nohyper,notoc]{tufte-handout}
\usepackage{babel}
\usepackage{hyperref}
\usepackage{caption}
\captionsetup[figure]{labelformat=simple, labelsep = period}

\makeatletter
\renewenvironment{marginfigure}[1][-1.2ex]%
{\begin{@tufte@margin@float}[#1]{figure}%
\captionsetup{labelformat=simple, labelsep = period}}
{\end{@tufte@margin@float}}
\makeatother

\begin{document}

\section{test}

\begin{figure}
\caption{erere}
\end{figure}
\vspace{20pt}
this is a test

\begin{marginfigure}
\caption{rerweaere}
\end{marginfigure}

\end{document}


As a side note, openany and a5paper are not supported class options with this document class.

-
Thanks. This worked perfectly. I've edited my code to remove the unsupported class options. –  Black Milk Oct 21 '12 at 6:15
@EdwinMontufar You're welcome! You should also consider the answer given by the current maintainer of the class. –  Gonzalo Medina Oct 21 '12 at 6:20

The Tufte-LaTeX classes don't play very nicely with the caption package, currently.

The easiest solution is to redefine the \@caption command that is defined by the Tufte-LaTeX classes. In the preamble of your document, add the following code:

\makeatletter
\long\def\@caption#1[#2]#3{%
\par
{\protect\numberline{\csname the#1\endcsname}{\ignorespaces #2}}%
\begingroup
\@parboxrestore
\if@minipage
\@setminipage
\fi
\@tufte@caption@font\@tufte@caption@justification
\noindent\csname fnum@#1\endcsname. \ignorespaces#3\par% changed : to .
\endgroup}
\makeatother


The example that you provided also has centered captions (as a by-product of using the caption package) instead of the ragged-right captions normally found in Tufte-style documents.

As Gonzalo Medina mentioned, the openany and a5paper options are ignored by the Tufte-LaTeX classes.

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Thank you. This worked as well. I'll keep this handy in case 'caption' doesn't work right. As for the centered captions, this doesn't occur when I actually have an image embedded. –  Black Milk Oct 21 '12 at 6:20
It's really nice to know you're around (and sorry for not noticing it before). I really like the the features provided by the Tufte-LaTeX classes! –  Gonzalo Medina Oct 21 '12 at 6:26
@godbyk I'd like to thank you for maintaining this wonderful class. –  Black Milk Oct 21 '12 at 6:30
@EdwinMontufar: When I ran a test with images here, the captions were centered. But if it looks okay on your end, then feel free to stick with the caption package. –  godbyk Oct 21 '12 at 6:49
@GonzaloMedina: Thanks! I'm hoping to do some more development work on the T-L classes over the next few months (as I'll be using it to write my dissertation). –  godbyk Oct 21 '12 at 6:52