The reference number is inconsistent to the caption number after using \setcounter command

Asked Jun 08 '20 at 05:38

Active Jun 08 '20 at 05:38

Viewed 248 times

I use \setcounter command to reset the algorithm number. However, when I use \ref command to quote this algorithm, the displayed number is inconsistent to the number in the title of the algorithm. How can I solve this issue?

\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{hyperref}

\usepackage[linesnumbered,ruled,vlined]{algorithm2e}

\begin{document}

\setcounter{algocf}{2}
\begin{algorithm}
\label{alg}
\caption{An algorithm}
1111
\end{algorithm}

Algorithm \ref{alg}.

\end{document}

asked Jun 08 '20 at 05:38

zbh2047

2

Place the label after the caption. – leandriis Jun 08 '20 at 05:40
This works well for the problem. However, it seems that the position of the label does not matter if I do not use \setcounter. Could you explain a little bit on why this works? Thank you very much! – zbh2047 Jun 08 '20 at 05:46
The order does depend. Just add a second algorithm with the wrong order, compile and see what happened to the reference numbers. – leandriis Jun 08 '20 at 05:52
2

label always has to be after the \caption otherwise you are labelling the section counter not the counter for the float. – David Carlisle Jun 08 '20 at 07:32
This may be helpful: Why does an environment's label have to appear after the caption? – barbara beeton Jun 08 '20 at 20:19

The reference number is inconsistent to the caption number after using \setcounter command

0 Answers0