pst-node

[Denis Girou]

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>>>>> "Bernd.Brandt" == Bernd Brandt <bernd at balaena.bio.vu.nl> writes:

    Bernd.Brandt> Does anyone know of an easy way in pst-node to use nodes of
    Bernd.Brandt> constant size/radius?
    Bernd.Brandt> As to have circles of the same radius around text I used
    Bernd.Brandt> \cnode and then \rnode to place the text:

    Bernd.Brandt> 	\begin{pspicture}(2,2)(4,8)
    Bernd.Brandt> 	\rput[c](2,8){\cnode{.4}{A}}
    Bernd.Brandt> 	\rput[c](2,6){\cnode{.4}{B}}
    Bernd.Brandt> 	\rput(2,8){\rnode{a}{$x_0$}}
    Bernd.Brandt> 	\rput(2,6){\rnode{b}{$x_{1_1}$}}
    Bernd.Brandt> 	\ncline[nodesep=5pt]{->}{A}{B}
    Bernd.Brandt> 	\end{pspicture}

  Use \makebox.
 
\documentclass{article}

\usepackage{pst-node}

\pagestyle{empty}

\begin{document}

\begin{pspicture}(2,2)(4,8)
  \rput[c](2,8){\cnode{.4}{A}}
  \rput[c](2,6){\cnode{.4}{B}}
  \rput(2,8){\rnode{a}{$x_0$}}
  \rput(2,6){\rnode{b}{$x_{1_1}$}}
  \ncline[nodesep=5pt]{->}{A}{B}
\end{pspicture}

\newcommand{\MyNode}[2]{\circlenode{#1}{\makebox[1cm]{#2}}}

\begin{pspicture}(2,2)(4,8)
  \rput(2,8){\MyNode{A}{$x_0$}}
  \rput(2,6){\MyNode{B}{$x_{1_1}$}}
  \ncline[nodesep=5pt]{->}{A}{B}
\end{pspicture}

\newlength{\MyLength}
\settowidth{\MyLength}{$x_{1_1}$}

\renewcommand{\MyNode}[2]{\circlenode{#1}{\makebox[\MyLength]{#2}}}

\begin{pspicture}(2,2)(4,8)
  \rput(2,8){\MyNode{A}{$x_0$}}
  \rput(2,6){\MyNode{B}{$x_{1_1}$}}
  \ncline[nodesep=5pt]{->}{A}{B}
\end{pspicture}

\end{document}

  P.S. It is the same thing for tree nodes. For an example of it, look at:
http://www.tug.org/ListsArchives/pstricks/msg00193.html

    Bernd.Brandt> Is there one command that is able to place text surrounded
    Bernd.Brandt> by a triangle, diamond, box, or circle of the same size?
    Bernd.Brandt> I was unable to find one in LGC.

  I am not sure here to really understand what you mean by "same size".
Can you be more precise? Thanks.

D.G.

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