# [pstricks] centereing / psmatrix

Bernd Brandt bernd at bio.vu.nl
Wed Feb 6 11:22:43 CET 2002

Dear group,

For some time i have been using psmatrix.
Suddenly i notice two things:
1) The node-connections (arrows) are NOT centered with respect to the box.
2) If i include the psmatrix in a pspicture environment \center does not work.

Has anyone a solution to these 'problems'.
I am esp. surprised that the node connections are not centered with respect to the boxes; they are just offset to the right.

Below the example. I hope someone is able to help me.
Kind regards,
Bernd

\begin{figure}
\center
\begin{psmatrix}[colsep=1,rowsep=1,mnode=r]
[name=S] \psframebox{Substrate} \\[0pt]
[name=E] \psframebox{Reserves} \\[0pt]
[name=V] \psframebox{\shortstack{Structural Biomass Growth
\\ ~\\ Maintenance }}
\end{psmatrix}
% Node connections
\psset{linewidth=1pt,nodesep=5pt,offset=4pt,arrows=->}
\ncline{S}{E}\naput{assimilation, $j_{EA}$}
\ncline{E}{V}\naput{utilization, $\dot{\jmath}_{EG} + \dot{\jmath}_{EM}$}
\caption{\label{fig:2:frame}}
\end{figure}