References are not recognized inside psmatrix

Question

In a psmatrix environment, labels are not recognized. Here is a MWE:

\documentclass[]{article}
\usepackage[crop=on]{auto-pst-pdf}
\usepackage{pst-node}

\begin{document}
\section{First \label{sec:first}}
\begin{figure}
\caption{this is a figure \label{fig:first}}
\end{figure}

See Figure \ref{fig:first} in Section \ref{sec:first}.
\begin{psmatrix}[colsep=0cm,rowsep=0mm]
Did you see Figure \ref{fig:first} in Section \ref{sec:first}?

\end{psmatrix}

\end{document}

Prints:

 "See Figure 1 in Section 1".
 "Did you see Figure ?? in Section ??"

Answer 1

You need the runs=2 option to auto-pst-pdf -- In this case the external compilation will do the references correctly (It's in the manual ;-))

\documentclass[]{article}
\usepackage[crop=on,runs=2]{auto-pst-pdf}
\usepackage{pst-node}

\begin{document}
\section{First \label{sec:first}}
\begin{figure}
\caption{this is a figure \label{fig:first}}
\end{figure}

See Figure \ref{fig:first} in Section \ref{sec:first}.
\begin{psmatrix}[colsep=0cm,rowsep=0mm]
Did you see Figure \ref{fig:first} in Section \ref{sec:first}?

\end{psmatrix}

\end{document}

Answer 2

If ypu use pdflatex the pstricks fragment is handled as an external file, however if you use

latex, dvips, ps2pdf

then it works in one file and you get