[Tex/LaTex] subcaption package incompatible with memoir class

memoirsubcaptionsubfloats

When I try to compile a document with the memoir class and the subcaption package I get the following error:

! Package subcaption Error: This package can't be used in
cooperation with the subfig package.

I presume this is because the memoir class loads the subfig package. Is that correct?

Is there a way to make them work together?

Best Answer

The subfig and subcaption packages can not be used in cooperation with each other. Instead, you can usecaption package with subfig to add some flavor to the captions and subcaptions (or you can use caption along with subcaption (which gives a subfigure command also).

\documentclass{memoir}
\usepackage[demo]{graphicx} % remove [demo] in your file
\usepackage{subfig} % for subfigures
\usepackage{caption}
\usepackage{lipsum}

\captionsetup[figure]{labelfont={bf,small},textfont={it,small}}
\captionsetup[subfloat]{labelfont={bf,small},textfont={it,small},
subrefformat=parens} %<-----designing subcaption
\newcommand{\myfigref}[2]{~\ref{#1}.\subref{#2}}% <---- a new macro for referring to a subfigure
%    
\begin{document}
%=========================
\chapter{First chapter}
\lipsum[1-4]
%=========================
\begin{figure}[ht]
  \includegraphics[width=1\textwidth]{my figure}
  \caption{My single picture}\label{fig:figures}
\end{figure}
%=========================
\begin{figure}[ht]
\centering
\subfloat[My first picture]{\label{fig:mdleft}{\includegraphics[width=0.4\textwidth]{my figure}}}\hfill
\subfloat[My second picture]{\label{fig:mdright}{\includegraphics[width=0.4\textwidth]{my figure}}}
\caption{My two big pictures}
\label{fig:subfigures}
\end{figure}
%===========================
From figure~\ref{fig:subfigures}.\subref{fig:mdleft}, we can see a small cat, in     
\myfigref{fig:subfigures}{fig:mdright} both can be used to refer figures.
\end{document}

enter image description here

Related Solutions

[Tex/LaTex] memoir class with subcaption and hyperref packages

Unfortunately the combination of memoir, caption, and hyperref is not fully compatible. (Not true anymore, see Addendum 2011-10-12.)

When the memoir document class detects the caption package it will re-define some macros to full-feed the needs of the caption package; so this combination works fine alone. But when you load the hyperref package, the memoir class loads the memhfixc package additionally which redefines \caption which makes the caption package to enter the fall-back or so called "compatibility mode".

\documentclass{memoir}
\usepackage{caption,hyperref}
\begin{document}
A
\end{document}

causes

Package caption Info: Incompatible package detected (regarding \caption).
(caption)             \caption = \long macro:->\donemaincaptiontrue \m@moldhypcaption .

Package caption Warning: \caption will not be redefined since it's already
(caption)                redefined by a document class or package which is
(caption)                unknown to the caption package.
See the caption package documentation for explanation.

The subcaption package does not work well in "compatibility mode", causing it to behave strange. (The very next version will issue an error message instead.)

My proposal:

I will add the redefinition of the memhfixc package to the database of my caption package. This will stop the caption package from operating in compatibility mode.
I will ask the current maintainer of the memoir document class if any further adoption is necessary.

So hopefully this issue will be fixed very soon.

P.S.: Sorry for the late answer

Addendum 2011-10-12

A new version of the caption package bundle is finally available on CTAN and as TeXlive update which fixes the hyperref compatibility issue. But one still needs


\let\subcaption\undefined
\let\subfloat\undefined

before loading the subcaption package since the memoir document class is not adapted to the subcaption package (yet).

Addendum 2012-04-10

Finally I have found some time to take a closer look at this issue, and it seems that I was able to adapt the subcaption package for usage with the memoir document class. I'll release it with the upcoming version 3.3 of the caption package.

[Tex/LaTex] Change subcaption label format

This is quite an unusual request/demand. Here is one solution, but it probably will make a mess at normal use of figure referencing:

\documentclass{memoir}

\usepackage{hyperref}
\usepackage[capitalise]{cleveref}

\newsubfloat{figure}
\renewcommand{\thesubfigure}{Fig.~\arabic{figure}\alph{subfigure}}

\crefformat{subfigure}{#2#1#3}
\begin{document}
\begin{figure}[h]\centering
     \renewcommand{\thefigure}{} 
\subbottom[first subfigure  \label{fig:1}]{\fbox{figure numero uno}}
    \hfil
\subbottom[second subfigure \label{fig:2}]{\fbox{figure numero dos}}
    \stepcounter{figure}
\end{figure}
    some text
\begin{figure}[h]\centering
     \renewcommand{\thefigure}{} 
\subbottom[first subfigure  \label{fig:3}]{\fbox{figure numero uno}}
    \hfil
\subbottom[second subfigure \label{fig:4}]{\fbox{figure numero dos}}
   \stepcounter{figure}
\end{figure}
some text
\begin{figure}[h]\centering
\fbox{some "normal" figure}
    \caption{normal figure}
    \label{fig:5}
\end{figure}

\cref{fig:1} and \cref{fig:4} and also \cref{fig:5}
\end{document}

Edit: Desired look-out is achieved by use \renewcommand{\thefigure}{} in each float with subfigures and \stepcounter{figure} before end of figure float. Now I hope is fulfilled your requests.