pst-node question

[Michael Sharpe]

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----- Original Message -----
From: Juan Manuel Leal Garcia <juanleal at cantv.net>
To: <pstricks at tug.org>
Sent: Friday, May 21, 1999 5:24 PM
Subject: pst-node question


> Hi everybody there:
>
> Is there any way to do what I want to do with this picture automatically
> with pst-node?
>
> \begin{pspicture}*(0,0)(3,1.2)
> \rput[lb]{0}(0,0.7){$A \stackrel{f}{\rightarrow} B
> \stackrel{g}{\rightarrow} C$}
>
\pscurve[arrowsize=3pt,arrowlength=0.5,arrowinset=1.4,linewidth=0.4pt]{->}%
>
>  (0.3,0.65)(1,0.5)(1.8,0.65)
> \rput[b]{0}(1,0.1){\small $g \circ f$}
> \end{pspicture}
>
> Thanks in advance.
>
> Juan Manuel
>
The psmatrix environment in pst-node is ideal for this. For example

\psset{arrows=->,labelsep=4pt,nodesep=5pt}
\begin{psmatrix} $A$&$B$&$C$\\
\ncline{1,1}{1,2}\naput{$f$} \ncline{1,2}{1,3}\naput{$g$}
\nccurve[angleA=-20,angleB=200]{1,1}{1,3}\nbput{$g\circ f$}
\end{psmatrix}

See the LaTex Graphics Companion.


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