Render an image of a
radialnetwork graph from agraphvizfile. Layouts:dot,neato,twopi,circo,fdp,sfdp,osage&patchwork. More information: https://graphviz.org/doc/info/command.html.
twopi -T png -O path/to/input.gv
twopi -T svg -o path/to/image.svg path/to/input.gv
twopi -T format -O path/to/input.gv
stdin and stdout:echo "{{digraph {this -> that} }}" | twopi -T gif > path/to/image.gif
twopi -?