Using Graphviz Paint

We use the dot language to draw graph (the graph ^^ in the algorithm).

1. Non-direction diagram

In the dot language, for the non-graph, use the name of the graph followed by the keyword graph. For edges such as u-> V, the dot language is expressed as "U-V".

Here's an example:

$ cat UNDIRECTED.GV 
graph undirected {
 1--2;
 3--2;
 4--1;
 2--5--4;
}

The command to generate the picture is as follows:

Dot-tpng UNDIRECTED.GV > Undirected.png

The resulting picture is as follows:

You can also use the Neato command.

Neato-tpng UNDIRECTED.GV > Undirected.png

You can also use a different format:

Neato-teps UNDIRECTED.GV > Undirected.eps

2 direction diagram

In the dot language, use-> instead of "--". Use the digraph keyword.

Here's an example:

Digraph directed {
    a-> b;
    A-> c-> d [color=red,penwidth=3.0];
    C-> e;
}

The resulting picture is as follows:

When using Graphviz, it is sometimes reported that "Format:" PNG "not recognized" error. can use

Dot-c

Resolve (requires root permission).

Reference:

Http://www.eecs.berkeley.edu/Pubs/TechRpts/2013/EECS-2013-176.pdf