[Tex/LaTex] Draw graphs (DAGs) in Latex

graphs

I am searching for a latex package which allows to draw something like the DAGs in this page.

Does anyone know how to draw them?

Thanks for the support!

Best Answer

_{Generally "do it for me" kind of questions are not welcome in this site. But this is your first day on the site. So here we go.}

Here is a sample with tikz.

\documentclass[tikz]{standalone}
\usetikzlibrary{shapes.geometric,positioning}
\begin{document}
  \begin{tikzpicture}
    \begin{scope}[xshift=-2cm]
    \node[ellipse,draw] at (0,0) {Blob};
    \end{scope}
    \begin{scope}
      \node[ellipse,draw] (a) at (0,0) {Blob};
      \node[ellipse,draw,above = 2cm of a] (b) {Tree};
      \draw[-latex] (b) to[out=20,in=-20,looseness=4]
                        node [right,font=\tiny,align=left] {subdir\\+filename} (b);
      \node[ellipse,draw,above = 2cm of b,align=center] (c) {commit\\-message};
      \draw[-latex] (c) to[out=20,in=-20,looseness=4]
                        node [right,font=\tiny,align=left] {parents} (c);
      \draw[-latex] (c) -- (b);
      \draw[-latex] (b) -- node[right, align=left]{+ File name \\ + node} (a);
    \end{scope}
  \end{tikzpicture}
\end{document}

enter image description here

Related Solutions

[Tex/LaTex] Bipartite graphs

One option would be to use PGF/TikZ; the package is very well documented, and you'll find many examples in the documentation. Another source of examples can be found at TeXample.net

Here's a little example:

\documentclass{book}
\usepackage{tikz}
\usetikzlibrary{positioning,chains,fit,shapes,calc}

\begin{document}

\definecolor{myblue}{RGB}{80,80,160}
\definecolor{mygreen}{RGB}{80,160,80}

\begin{tikzpicture}[thick,
  every node/.style={draw,circle},
  fsnode/.style={fill=myblue},
  ssnode/.style={fill=mygreen},
  every fit/.style={ellipse,draw,inner sep=-2pt,text width=2cm},
  ->,shorten >= 3pt,shorten <= 3pt
]

% the vertices of U
\begin{scope}[start chain=going below,node distance=7mm]
\foreach \i in {1,2,...,5}
  \node[fsnode,on chain] (f\i) [label=left: \i] {};
\end{scope}

% the vertices of V
\begin{scope}[xshift=4cm,yshift=-0.5cm,start chain=going below,node distance=7mm]
\foreach \i in {6,7,...,9}
  \node[ssnode,on chain] (s\i) [label=right: \i] {};
\end{scope}

% the set U
\node [myblue,fit=(f1) (f5),label=above:$U$] {};
% the set V
\node [mygreen,fit=(s6) (s9),label=above:$V$] {};

% the edges
\draw (f1) -- (s6);
\draw (s6) -- (f2);
\draw (f2) -- (s7);
\draw (s7) -- (f3);
\draw (s8) -- (f3);
\draw (f3) -- (s9);
\draw (s9) -- (f5);
\draw (f5) -- (s6);
\end{tikzpicture}

\end{document}

EDIT: I add a variation of the previous graph (requested in a comment); each vertex will now be a labelled ordered pair. The idea is to use multiple variables in each \foreach construct; the first variable will be used to add a name to each node and to create the labels; the second and third variables will give the first and second coordinates of each ordered pair. The code:

\documentclass{book}
\usepackage{tikz}
\usetikzlibrary{positioning,chains,fit,shapes,calc}

\begin{document}

\definecolor{myblue}{RGB}{80,80,160}
\definecolor{mygreen}{RGB}{80,160,80}

\begin{tikzpicture}[thick,
  fsnode/.style={},
  ssnode/.style={},
  every fit/.style={ellipse,draw,inner sep=5pt,text width=2cm},
  ->,shorten >= 3pt,shorten <= 3pt
]

% the vertices of U
\begin{scope}[start chain=going below,node distance=7mm]
\foreach \i/\xcoord/\ycoord in {1/6/8,2/5/1,3/-4/7,4/6/9,5/0/-3}
  \node[fsnode,on chain,label=left:$t_{\i}$] (f\i) {$(\xcoord,\ycoord)$};
\end{scope}

% the vertices of V
\begin{scope}[xshift=4cm,yshift=-0.5cm,start chain=going below,node distance=7mm]
\foreach \i/\xcoord/\ycoord in {6/0/3,7/1/4,8/-2/1,9/5/9}
  \node[ssnode,on chain,label=right:$t_{\i}$] (s\i) {$(\xcoord,\ycoord)$};
\end{scope}

% the set U
\node [myblue,fit=(f1) (f5),label=above:$U$] {};
% the set V
\node [mygreen,fit=(s6) (s9),label=above:$V$] {};

% the edges
\draw (f1) -- (s6);
\draw (s6) -- (f2);
\draw (f2) -- (s7);
\draw (s7) -- (f3);
\draw (s8) -- (f3);
\draw (f3) -- (s9);
\draw (s9) -- (f5);
\draw (f5) -- (s6);
\end{tikzpicture}

\end{document}

[Tex/LaTex] Drawing undirected graphs in LaTeX

You just need to take out the arrow commands -> and set the loop style to empty:

enter image description here

All of the credit is due to @Stefan Kottwitz for creating the original picture.

\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[auto, node distance=3cm, every loop/.style={},
                    thick,main node/.style={circle,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}

Best Answer

Related Solutions

[Tex/LaTex] Bipartite graphs

[Tex/LaTex] Drawing undirected graphs in LaTeX

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