Graphviz is a standard tools that is used to create images of graphs (see http://www.graphviz.org/). The graph are described thanks to a language. For instance the graph represented in the following image would be represented as
A -> B B -> C C -> A |
Now, to transform the text above into an image, you would save the text in a file (let us say input.dot) and type:
dot -Tsvg input.dot -o output.svg |
where dot is a binary provided by graphviz. If you do not have graphviz, you can use the nice API from google (which is used to create the image below) by typing:
<img src="https://chart.googleapis.com/chart?cht=gv:dot&chl=digraph{ A [style=filled,fillcolor=forestgreen]; A->B[color=red, arrowhead=tee] ; B->C->A}&chs=350x350" alt="neato chart"> |
