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Why does an environment's label have to appear after the caption?

Hello i am using a tikz with it's externalize library. I create figures with the following coding style:

\begin{figure}
\centering
\begin{tikzpicture}
  code code code..
\end{tikzpicture}
\label{fig:label}
\caption{Blah blah blah text.}
\end{figure}

when i use \ref{fig:label} it does not display the correct number. Another notable and bizare havaviour is that the number is in the format e.g 5.2.1 and not 5.2 has anyone encountered this?

Also by trying to create a MWE i could not make the thing to even appear.. I am not trying to do complex stuff, just to say "in the figure x.x ..." anyways here is the not working ME:

\documentclass[a4paper,10pt]{report}
\usepackage{tikz} %pgf-tikz pakcage
\usepackage{pgfplots}
\usepackage{hyperref}

\hypersetup{
    colorlinks=true,linkcolor=blue,linktocpage,bookmarksopen=true
}

\begin{document}

\begin{figure}
\begin{tikzpicture}

\draw[fill = blue,fill opacity = 0.3](0,2) rectangle (1.5,3.5);
\draw[fill = yellow,fill opacity = 0.3](0.5,2.5) rectangle (1,3);

\draw[->] (0.75,0.75) -- (0.75,2.75);
\end{tikzpicture}
\label{fig:stuff}
\end{figure}

Hello \ref{fig:stuff} world
\end{document}
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1  
Put \label after \caption. –  lockstep Aug 31 '12 at 21:20
    
That's it. I switched positions and it worked like a charm. Thanks a lot. –  msmechanized Aug 31 '12 at 21:36
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marked as duplicate by lockstep, Torbjørn T., Gonzalo Medina, cmhughes, Stephan Lehmke Aug 31 '12 at 21:44

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1 Answer

up vote 3 down vote accepted

you should put figure label after caption

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