[Tex/LaTex] Get list of unused labels

cross-referencing

I have a long article (~20 pages) with lots of equations being numbered and stuff. For a good cleanup, I would like to unnumber the unused equations. I am aware I can hide the unused numbers, but I would like to clean the thing up and not rely to the feature of mathtools. Therefore, is it possible to somehow display the list of unused labels?

On the following MWE, it should show (in the log, in bash, whatever) that boo was unused:

\documentclass{article}
\begin{document}
\section{BLA}\label{bla}
\section{BOO}\label{boo}
In Section~\ref{bla}.
\end{document}

Best Answer

Use the refcheck package:

enter image description here

\documentclass{article}
\usepackage{refcheck}
\begin{document}
\section{BLA}\label{bla}
\section{BOO}\label{boo}
In Section~\ref{bla}.
\end{document}

Unused \labels are also marked in the .log. The above MWE outputs

Package refcheck Warning: Unused label `boo' on input line 5.

in the .log. The visual queues in the output can be turned on/off using the [norefs] option. It would also work for \cites (with the accompanying showcites/nocites boolean package option).

Related Solutions

[Tex/LaTex] How to get a list of all the labels in a LaTeX document in WinEdt

This can be done in a very simple manner directly within WinEdt:

Show the Gather interface (from the View menu in WinEdt>=6)
Press the Collect Items button in its toolbar
Jump to the Label tab and there you can see all your labels

Also, you can now press the button Copy in the interface toolbar and paste it in a blank document to perform a search on your labels

[Tex/LaTex] How to get LaTeX to warn about unreferenced figures and unused labels in general

Use the package refcheck. It is

Intended to check references in a document, looking for numbered but unlabelled equations, for labels which are not used in the text, for unused bibliography references.

Note that it checks for labels that are not used in the text but not for tables and figures that are not labelled. Thus if you got a table or figure without a label you'll not get warned. If you compile the following you'll get a demonstration of its core features (the idea for this is from the package's excellent demo):

\documentclass{article}

\usepackage{refcheck}

\begin{document}

\begin{equation}\label{eq:1}% Labelled and referred to
1+1=2
\end{equation}

\ref{eq:1}

\begin{equation}\label{eq:2}% Labelled but not referred to
1-1=0
\end{equation}

\begin{equation}% Not labelled nor referred to
1+1=0
\end{equation}

\begin{table}[h]
\center
\begin{tabular}{cc}
1 & 2 \\
3 & 4 \\
\end{tabular}
\caption{Numbers}\label{tab:1}% Labelled but not referred to
\end{table}

\begin{figure}[h]\label{fig:1}% Labelled but not referred to
\caption{Foo}
\end{figure}

\end{document}

The last two equations will be marked by "?" in the output because they're not labelled and referred to. The table and figure will be marked by "?" because they're labelled but not referred to. Also the .log file will contain:

 Unused label `eq:2' on page 1
 Unlabelled equation (3) on page 1
 Unused label `tab:1' on page 1
 Unused label `fig:1' on page 1

Note that refcheck should be loaded after the ams packages and the hyperref package.

Relatedly you may also want to check for duplicate labels.

Best Answer

Related Solutions

[Tex/LaTex] How to get a list of all the labels in a LaTeX document in WinEdt

[Tex/LaTex] How to get LaTeX to warn about unreferenced figures and unused labels in general

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