How to combine label and counter in enumerate?

Question

Essentially, I would like the following:

X1. text text text 
X2. text2 text2 text2
X3. text text textaaa

So, talking code:

\documentclass{article}
\begin{document}
\begin{enumerate}
    \item text text text 
    \item text2 text2 text2
    \item text text textaaa
\end{enumerate}
\end{document}

See if http://tex.stackexchange.com/questions/37740/enumerate-with-properties/37741#37741 helps. — Torbjørn T., Mar 13 '13 at 21:29

score 5 · Accepted Answer · answered Mar 13 '13 at 21:29

5

There are fancier newer packages (eg enumitem) but the core latex distribution has an enumerate package that lets you do:

enter image description here

\documentclass{article}
\usepackage{enumerate}
\begin{document}
\begin{enumerate}[X1.]
    \item text text text 
    \item text2 text2 text2
    \item text text textaaa
\end{enumerate}
\end{document}

answered Mar 13 '13 at 21:29

David Carlisle

757,742

thanks for the answer, I am trying it but I get "Latex Error: ./questions.tex:14 Package keyval Error: X1. undefined." Do you know what that is? – user3232 Mar 13 '13 at 22:15
@user3232 enumerate doesn't use keyval did you use exactly as above or use enumitem which uses a keyval syntax. – David Carlisle Mar 13 '13 at 22:25
I see that in my document I have got \usepackage{enumitem}. This fixed the problem: \begin{enumerate}[label=X\arabic.,leftmargin=] – user3232 Mar 13 '13 at 22:31
How do I set custom number to begin, so let's say start with X4? – user3232 Mar 13 '13 at 22:49
found it, start=4 – user3232 Mar 13 '13 at 22:59

score 5 · Answer 2 · answered Mar 13 '13 at 21:32

Without a package you can use

\documentclass{article}

\renewcommand{\labelenumi}{X\arabic{enumi}.}

\begin{document}
\begin{enumerate}
    \item text text text 
    \item text2 text2 text2
    \item text text textaaa
\end{enumerate}
\end{document}

but enumitem is a great way to go

\documentclass{article}

\usepackage{enumitem}
\setlist[enumerate]{label=X\arabic*.}


\begin{document}
\begin{enumerate}
    \item text text text 
    \item text2 text2 text2
    \item text text textaaa
\end{enumerate}
\end{document}

How to combine label and counter in enumerate?

2 Answers2