Remove chapter gap in list of figures in report class

Question

I have a list of figure where figures are grouped by chapter (see image below).

I have already tried numbers of solutions but none of them worked. Here's a MWE:

    \documentclass{report}
\usepackage[german]{babel}
\usepackage{graphicx} % Required for inserting images
\begin{document}
 \renewcommand{\listfigurename}{Abbildungsverzeichnis}
 \listoffigures
 \chapter{chapter1}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{Figures/fig1.png}
    \caption{Caption 1}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{Figures/fig1.png}
    \caption{Caption 2}
\end{figure}
\chapter{chapter1}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{Figures/fig1.png}
    \caption{Caption 1}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{Figures/fig1.png}
    \caption{Caption 2}
\end{figure}
\chapter{chapter1}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{Figures/fig1.png}
    \caption{Caption 1}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{Figures/fig1.png}
    \caption{Caption 2}
\end{figure}
 \end{document}

Thanks for your help

score 2 · Answer 1 · answered Feb 19 '23 at 08:04

You can remove these gaps by patching \@chapter; it inserts gaps in both the List of Figures (lot) and List of Tables (lot). Patching is done using a search-and-replace technique provided by etoolbox's \patchcmd{<cmd>}{<search>}{<replace>}{<success>}{<failure>}.

\documentclass{report}
\usepackage[german]{babel}
\usepackage{graphicx}
\usepackage{etoolbox}
\renewcommand{\listfigurename}{Abbildungsverzeichnis}
\makeatletter
\patchcmd{@chapter}% <cmd>
  {\addtocontents{lof}{\protect\addvspace{10\p@}}}% <search>
  {}% <replace>
  {}{}% <success><failure>
\patchcmd{@chapter}% <cmd>
  {\addtocontents{lot}{\protect\addvspace{10\p@}}}% <search>
  {}% <replace>
  {}{}% <success><failure>
\makeatother
\begin{document}
\listoffigures
\chapter{First chapter}
\begin{figure}
  \caption{Caption 1}
  \caption{Caption 2}
\end{figure}
\chapter{Second chapter}
\begin{figure}
  \caption{Caption 1}
  \caption{Caption 2}
\end{figure}
\chapter{Third chapter}
\begin{figure}
  \caption{Caption 1}
  \caption{Caption 2}
\end{figure}
\end{document}

You need at least two compilations on the first change in order for the patch to reflect in the LoF/LoT.

score 1 · Accepted Answer · answered Feb 19 '23 at 08:05

This is caused by the definition of \chapter in the report class. It calls another command \@chapter which calls \addtocontents{lof {\protect\addvspace{10\p@}}% adding vertical space to the list of figues auxiliary file. You don't want this to happen. One way to "fix" this: is to copy the \@chapter command into your document and comment out the offending line.

\documentclass{report}
%\usepackage[german]{babel}
\usepackage{graphicx} % Required for inserting images
\makeatletter
%\show@chapter
\def@chapter[#1]#2{\ifnum \c@secnumdepth >\m@ne
                         \refstepcounter{chapter}%
                         \typeout{@chapapp\space\thechapter.}%
                         \addcontentsline{toc}{chapter}%
                                   {\protect\numberline{\thechapter}#1}%
                    \else
                      \addcontentsline{toc}{chapter}{#1}%
                    \fi
                    \chaptermark{#1}%
%                    \addtocontents{lof}{\protect\addvspace{10\p@}}% 
                    \addtocontents{lot}{\protect\addvspace{10\p@}}%
                    \if@twocolumn
                      @topnewpage[@makechapterhead{#2}]%
                    \else
                      @makechapterhead{#2}%
                      @afterheading
                    \fi}
\makeatother
\begin{document}
 \renewcommand{\listfigurename}{Abbildungsverzeichnis}
 \listoffigures
 \chapter{chapter1}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{fig1.png}
    \caption{Caption 1}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{fig1.png}
    \caption{Caption 2}
\end{figure}
\chapter{chapter1}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{fig1.png}
    \caption{Caption 1}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{fig1.png}
    \caption{Caption 2}
\end{figure}
\chapter{chapter1}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{fig1.png}
    \caption{Caption 1}
\end{figure}
\begin{figure}
    \centering
    \includegraphics[width=3cm]{fig1.png}
    \caption{Caption 2}
\end{figure}
 \end{document}

Remove chapter gap in list of figures in report class

2 Answers2