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In a directed graph, if there is a cycle, the graphviz makes that edge really short.
Is there a parameter that would let me change the length of the cyclic edge, so that the graph looks a bit uniform.
digraph ER { rankdir="LR"; //orientation=landscape; node [shape=ellipse, fontsize=30]; {node [label="Original"] old;} {node [label="Final"] new;} {node [label="Intermediate"] ir;} old -> ir [label="suggest", fontsize=30]; ir -> ir [label="validate", fontsize=30, len=f]; ir -> new [label = "finalize", fontsize=30]; } 
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How do I use graphviz to convert this into an image? For windows: dl the msi and install; Find gvedit.exe in your programs list; Open . dot file in question; Click running person on toolbar; Go to graph -> settings ; change Output file type to file type of your liking and press ok..
Ranks and Subgraphs To work out the layout, Graphviz uses a system it calls "ranks". Each node is assigned a higher rank than the highest ranked node that point to it. If your rank direction is set to left to right ( rankdir=LR ), then nodes with a higher rank are placed further to the right.
Graphviz consists of a graph description language named the DOT language and a set of tools that can generate and/or process DOT files: dot. a command-line tool to produce layered drawings of directed graphs in a variety of output formats, such as (PostScript, PDF, SVG, annotated text and so on). neato.
Edit: Sorry, my answer will make edges longer, but not the self referencing edges you need.
len doesn't work in dot, but minlen does.
https://www.graphviz.org/doc/info/attrs.html#d:minlen
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