# Skip figure counter

I have some problem with the counter of my figures. I added several figures, some of them with captions and some of them without captions. I want those figures with captions to be counted, the others should not increase the counter. Somehow it sometimes work, sometimes it does not.

For example, apparently the following figure is being counted (since when I erase it, the following figures' counters are decreased by one):

\documentclass{article}
\usepackage{amsmath,amssymb}
\usepackage{amsthm}
\usepackage{caption}
\usepackage{subcaption}
\usepackage{chngcntr}
\usepackage{framed}
\usepackage{tikz}
\usepackage{geometry}
\usetikzlibrary{fit,matrix}
\counterwithin{figure}{section}

\begin{document}

\begin{figure}[h]
\begin{subfigure}[h]{0.3\textwidth}
\centering
$$u=$$
\tikz[baseline=(M.west)]{%
\node[matrix of math nodes,matrix anchor=west, ampersand replacement=\&]     (M) {%
~3 \& 0 \&~ 0 \&~ 0\\
~-3 \& 0 \&~ 0 \&~ 0\\
~0 \& 0 \&~ 0 \&~ 0\\
};
\node[draw,fit=(M-1-1)(M-3-4),inner sep=-1pt] {};
},
\end{subfigure}%
~
\begin{subfigure}[h]{0.215\textwidth}
\centering
$$v=$$
\tikz[baseline=(M.west)]{%
\node[matrix of math nodes,matrix anchor=west, ampersand replacement=\&] (M) {%
~3 \& 0 \&~ 0 \&~ 0\\
~0 \& 0 \&~ 0 \&~ 0\\
~-3 \& 0 \&~ 0 \&~ 0\\
};
\node[draw,fit=(M-1-1)(M-3-4),inner sep=-1pt] {};
}
\end{subfigure}
\end{figure}

\end{document}


I guess the figure looks weird to some of you, I am not very good at writing Latex documents. But the main problem is the numbering for now.

Does the counter depend on the size of the figure?

Can I manually tell the program to skip counting a specific figure?

• As far as I know, they are only counted when \caption is used (the unstarred version) – user31729 Jul 5 '15 at 17:34
• Apparently it also counts several figures without caption. My first figure with caption is counted correctly, as Figure 3.1 (I count them within sections). The next figure with caption should be Figure 3.2, but the caption appears as "Figure 3.3:...". But it is even more strange to me that when I reference this figure, the reference appears as Figure 3.5. The code basically looks like this: \begin{figure} ... \caption{...} \end{figure}\label{figure3.1} ... \begin{figure} ... \end{figure} ... \begin{figure} ... \caption{...} \end{figure}\label{figure3.2} – lattice Jul 5 '15 at 17:43
• \label should be after \caption inside the figure environment. – Werner Jul 5 '15 at 17:48
• Okay, I placed all labels after the \caption. Now the references work correctly, but the figure numbering has not changed. – lattice Jul 5 '15 at 17:59
• Omitting the \caption should not increase the counter. We need to know what document class you are using. – egreg Jul 5 '15 at 18:06

It's a feature of the subcaption package. When subfigure is used, the figure counter is stepped independently on whether \caption is used. More precisely, this is done if the caption is expected to be at the bottom, which is usual for figures. The reason is simple: the caption to a subfigure needs to know the number of the main figure caption, which however would only be generated later.

In this case, the \caption command will adjust things so that the counter is not stepped again.

I find it quite illogical to have a figure environment without a (main) caption, which is useful for the readers. It's also quite strange to have subfigures without subcaptions.

However, you don't need subfigure, unless you want to specify a subcaption. A subfigure environment is just a minipage under cover, plus the adjustments I mentioned before.

By the way, the [h] specifier is not a good one for subfigure: it accepts [t] or [b], like minipage, with the same meaning.

\documentclass{article}

\usepackage{subcaption}

\newcommand{\mockpicture}{\fbox{\rule{0pt}{1cm}\rule{2cm}{0pt}}}

\begin{document}

\begin{figure}[!htp]
\centering
NO CAPTION HERE

\medskip

\begin{minipage}{0.3\textwidth}
\centering
\mockpicture
\end{minipage}
\begin{minipage}{0.3\textwidth}
\centering
\mockpicture
\end{minipage}

\end{figure}

\begin{figure}[!htp]
\centering

NO CAPTION HERE

\medskip

\mockpicture

\end{figure}

\begin{figure}[!htp]
\centering

CAPTION HERE

\medskip

\mockpicture

\caption{A caption text}

\end{figure}

\end{document}


• Thanks a lot, it worked. By the way, I use the figure environment for visualizing certain vectors in an 3x4 array. I just felt like it was needed to add subfigure environments if I want to place several such arrays next to each other. Deleting this environment solved the numbering problem, and did not change the figure itself. – lattice Jul 5 '15 at 20:47

The following is from another question No caption number for figures and tables. Hopefully you can get rid of the caption together with the labeling.

\documentclass{article}

\usepackage{caption}

\usepackage{graphicx}

\begin{document}

\begin{figure}[h!]
\centering
\includegraphics[height=2cm]{figure}
\caption{Une figure.}
\end{figure}

\begin{figure}[h!]
\centering
\includegraphics[height=2cm]{figure1}
\captionsetup{labelformat=empty}
\caption{Une figure.}
\end{figure}

\end{document}

• I tried that but then the figure was not displayed correctly. – lattice Jul 5 '15 at 17:53
• The figure* environment has nothing to do with numbering of the figures. It creates a double column float in a two document layout. If the layout is single column, it is equivalent to figure. – egreg Jul 5 '15 at 18:07
• I don't see how the part below the edit addresses the problem (and please don't recommend [h!] as that usually just generates a latex warning, you should always include t or better p) The part before edit should be deleted as figure* is not related to the question at all. – David Carlisle Jul 5 '15 at 18:33

I had success with the following when I still wanted a caption but I didn't want it numbered:

\begin{figure}
\caption{A figure}
. . .
\end{figure}
. . .
\begin{figure}\ContinuedFloat
\caption{A non-numbered figure}
. . .
\end{figure}