I want to right circled letters.

Just like \fbox{} but with a circle. How can I do it?

Tia

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- Jan 9th 2009, 04:19 AMdarkmoonHow to circle a letter
I want to right circled letters.

Just like \fbox{} but with a circle. How can I do it?

Tia - Jan 9th 2009, 05:08 AMflyingsquirrel
- Jan 9th 2009, 05:18 AMdarkmoon
Almost there...

I'm looking a way to draw graphs and I need a way to draw the nodes...

I did some diagrams like this

\begin{diagram}

\node{A} \arrow{e}\node{\textcircled{$b_1$}}\arrow{e} \node{C}\end{diagram}

so the \textcircled doesn't work very well.

Do you know other way to draw graphs? - Jan 9th 2009, 06:52 AMflyingsquirrel
We can use the package PStricks to draw graphs :

Code:`\documentclass[11pt,a4paper]{article}`

\usepackage[utf8]{inputenc}

\usepackage{pstricks,pst-node,pst-tree}

\title{Diagrams}

\author{}

\date{}

\begin{document}

\maketitle

%%% using \pstree...

\[ \psset{arrows=->}

\pstree[treemode=R,levelsep=5em]{\TR{A}}{

\pstree{ \Tcircle{b_1}}{

\TR{C}

}

} \]

%%% ...or using \psmatrix :

\[ \psmatrix[colsep=5em,mnode=circle]

A & b_1 & C

\ncline{->}{1,1}{1,2}

\ncline{->}{1,2}{1,3}

\endpsmatrix \]

\end{document}

To learn more about how to draw graphs and trees using PStricks :

- Jan 9th 2009, 07:15 AMdarkmoon
Thanks, it's a great help