# Example: Simple graph

Published 2012-02-26 | Author: Stefan Kottwitz

A simple example of a graph with straight and bend arrows and loops. It has been posted as answer to the question Drawing graphs in LaTeX of Ichibann.

• Define styles for edges, arrows, and nodes
• Place the main nodes
• Draw edges with nodes for description
• Use options loop and bend for loops and bent edges
• Specify left and right for bend direction and node placement

Do you have a question regarding this example, TikZ or LaTeX in general? Just ask in the LaTeX Forum.
Oder frag auf Deutsch auf TeXwelt.de.

% A simple graph with straight and bend arrows and loops
% Stefan Kottwitz
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{arrows}
\begin{document}
\begin{tikzpicture}[->,>=stealth',shorten >=1pt,auto,node distance=3cm,
thick,main node/.style={circle,fill=blue!20,draw,font=\sffamily\Large\bfseries}]

\node[main node] (1) {1};
\node[main node] (2) [below left of=1] {2};
\node[main node] (3) [below right of=2] {3};
\node[main node] (4) [below right of=1] {4};

\path[every node/.style={font=\sffamily\small}]
(1) edge node [left] {0.6} (4)
edge [bend right] node[left] {0.3} (2)
edge [loop above] node {0.1} (1)
(2) edge node [right] {0.4} (1)
edge node {0.3} (4)
edge [loop left] node {0.4} (2)
edge [bend right] node[left] {0.1} (3)
(3) edge node [right] {0.8} (2)
edge [bend right] node[right] {0.2} (4)
(4) edge node [left] {0.2} (3)
edge [loop right] node {0.6} (4)
edge [bend right] node[right] {0.2} (1);
\end{tikzpicture}
\end{document}


• #1 Richard Hsu, November 2, 2012 at 2:38 a.m.

One of the best examples that beginners can use to create graphs without spending hours trying to figure out how to make something. Very clean! Thank you!

• #2 Al.tro., September 5, 2013 at 12:04 p.m.

Brilliant example. Which version of pgf-tikz does it need?