`\counterwithin` no funciona con contadores personalizados

Question

Quiero contar sectionpara cada nueva conferencia. Aprendo que \counterwithinpuedo hacer este trabajo. Se compila correctamente pero no funciona en este momento.

Aquí está el código relevante.

\newcounter{lecnum}
\renewcommand{\thepage}{\thelecnum-\arabic{page}}
\renewcommand{\thesection}{\thelecnum.\arabic{section}}
\renewcommand{\theequation}{\thelecnum.\arabic{equation}}
\renewcommand{\thefigure}{\thelecnum.\arabic{figure}}
\renewcommand{\thetable}{\thelecnum.\arabic{table}}

\newcommand{\lecture}[4]{
    \pagestyle{myheadings}
    \thispagestyle{plain}
    \newpage
    \setcounter{lecnum}{#1}
    \setcounter{page}{1}
    \noindent
    \begin{center}
        \framebox{
            \vbox{\vspace{2mm}
                \hbox to 6.28in { {\bf ECCV2020
                        \hfill August 2020} }
                \vspace{4mm}
                \hbox to 6.28in { {\Large \hfill Lecture #1: #2  \hfill} }
                \vspace{2mm}
                \hbox to 6.28in { {\it Lecturer: #3 \hfill Scribes: #4} }
                \vspace{2mm}}
        }
    \end{center}
    \markboth{Lecture #1: #2}{Lecture #1: #2}
}

\counterwithin*{section}{lecnum}

Gracias

Answer 1

Es necesario \stepcounterpara restablecer los contadores asociados.

\documentclass{article}
\usepackage[a4paper,textwidth=7in]{geometry}

\geometry{textheight=6cm}% just to make a smaller picture

\newcounter{lecnum}
\renewcommand{\thepage}{\thelecnum-\arabic{page}}
\counterwithin{section}{lecnum}
\counterwithin{equation}{lecnum}
\counterwithin{figure}{lecnum}
\counterwithin{table}{lecnum}

\pagestyle{myheadings}

\newcommand{\lecture}[4]{%
  \clearpage
  \thispagestyle{plain}
  \stepcounter{lecnum}% resets every associated counter
  \setcounter{lecnum}{#1}%
  \setcounter{page}{1}
  \begin{center}
    \framebox{%
      \parbox[t]{6.28in}{%
        \vspace{2mm}
        {\bfseries ECCV2020\hfill August 2020\par}
        \vspace{2mm}
        {\Large\hspace*{\fill}Lecture #1: #2\hspace*{\fill}\par}
        \vspace{4mm}
        {\itshape Lecturer: #3\hfill Scribes: #4\par}
        \vspace{2mm}
      }%
    }
  \end{center}
  \markboth{Lecture #1: #2}{Lecture #1: #2}
}

\begin{document}

\lecture{1}{Boxes}{egreg}{Rabbittac}

This is the first lecture.

\section{First}

First section with an equation
\begin{equation}
a=b
\end{equation}

\lecture{3}{Counters}{egreg}{Rabbittac}

This is the third lecture.

\section{First}

First section with an equation
\begin{equation}
a=b
\end{equation}

\end{document}

Refactoricé el código de la caja para usar comandos LaTeX, en lugar de comandos simples. Los comandos \bfy \itsimilares han estado obsoletos durante unos 25 años.