by Stefan Kottwitz » Thu Oct 21, 2021 4:03 am
\caption
takes care of the figure counter that
\label
should ise. If
\label
comes before
\caption
, it takes some previous counter, which is wrong.
Let's look at this in this example:
Code: Select all
\documentclass{article}
\usepackage{graphicx}
\begin{document}
\section{Introduction}
\section{Figures}
\begin{figure}[hb]
\centering
\includegraphics[height=2cm,width=3cm]{example-image}
\label{fig:example}% before \caption, which is wrong
\caption{An example figure}
\end{figure}
\section{Appendix}
\begin{figure}[hb]
\centering
\includegraphics[height=2cm,width=3cm]{example-image}
\label{fig:other}% before \caption, which is wrong
\caption{Another example figure}
\end{figure}
% Now we get wrong reference numbers:
See example figure \ref{fig:example} and another figure \ref{fig:other}.
\end{document}
When we compile it, we get:

- figures-labels.png (24.28 KiB) Viewed 33170 times
We can see that the references at the end are clearly wrong. If we take a closer look, we see that they refere to the section number, where they are in. Move
\label
after
\caption
, and the issue is fixed.
Stefan
[latex]\caption[/latex] takes care of the figure counter that [latex]\label[/latex] should ise. If [latex]\label[/latex] comes before [latex]\caption[/latex], it takes some previous counter, which is wrong.
Let's look at this in this example:
[code]\documentclass{article}
\usepackage{graphicx}
\begin{document}
\section{Introduction}
\section{Figures}
\begin{figure}[hb]
\centering
\includegraphics[height=2cm,width=3cm]{example-image}
\label{fig:example}% before \caption, which is wrong
\caption{An example figure}
\end{figure}
\section{Appendix}
\begin{figure}[hb]
\centering
\includegraphics[height=2cm,width=3cm]{example-image}
\label{fig:other}% before \caption, which is wrong
\caption{Another example figure}
\end{figure}
% Now we get wrong reference numbers:
See example figure \ref{fig:example} and another figure \ref{fig:other}.
\end{document}[/code]
When we compile it, we get:
[attachment=0]figures-labels.png[/attachment]
We can see that the references at the end are clearly wrong. If we take a closer look, we see that they refere to the section number, where they are in. Move [latex]\label[/latex] after [latex]\caption[/latex], and the issue is fixed.
Stefan