[Tex/LaTex] \renewcommand not working for IEEE subsection

Question

I wanted to number sections with alphabets and subsections with roman numbers

I have added these two lines above \begin{document}:

\renewcommand \thesection {\Alph{section}} 
\renewcommand \thesubsection {\thesection.\Roman{subsection}}

It changes the section numbering to A, B, C, … from the default I, II, III, …, but the subsection numbering is still the default A, B, C, …

I have also tried this and it did not work either.

\renewcommand \thesubsection {\Roman{subsection}}

I have also tried to change the numbering of paragraphs, but there was no change from the default.

Can anyone please help me with this?

Answer 1

Since you are using the IEEEtran document class with no special options, you need to redefine the family of commands with a dis suffix, since in that case the class has

\else% not compsoc
  \def\thesectiondis{\thesection.}                   % I.
  \def\thesubsectiondis{\Alph{subsection}.}          % B.
  \def\thesubsubsectiondis{\arabic{subsubsection})}  % 3)
  \def\theparagraphdis{\alph{paragraph})}            % d)
\fi

So for subsections, subsubsections and paragraphs you need a redefinition of \thesubsectiondis, \thesubsubsectiondis and \theparagraphdis, respectively.

A complete example (adjust the redefinitions to suit your needs):

\documentclass{IEEEtran}

\renewcommand\thesection{\Alph{section}} 
\renewcommand\thesubsectiondis{\thesection.\Roman{subsection}}
\renewcommand\thesubsubsectiondis{\thesubsectiondis.\alph{subsubsection}}
\renewcommand\theparagraphdis{\arabic{paragraph}.}

\begin{document}

\section{Test section}
\subsection{Test subsection}
\subsubsection{Test subsubsection}
\paragraph{Test paragraph}

\end{document}