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Putting the rank = same; … statements in braces, e.g.: digraph G { rankdir = TB; subgraph { A -> B A -> C C -> D X -> Y // note that rank is used in the subgraph {rank = same; A; X;} {rank = same; B; D; Y;} } /* closing subgraph */ … Read more

Use the dpi attribute. Example: graph G { graph [ dpi = 300 ]; /* The rest of your graph here. */ }

To place captions outside the node, you may use xlabel: digraph g { forcelabels=true; a [label=”Birth of George Washington”, xlabel=”See also: American Revolution”]; b [label=”Main label”, xlabel=”Additional caption”]; a-> b; } forcelabels=true makes sure no xlabel is omitted. A second option is to use HTML-like labels: digraph g { a[label=<Birth of George Washington<BR /> <FONT … Read more

it’s very easy, as long as you stick to basic layout: place rankdir=”LR” near top definition. Something like digraph unix { size=”6,6″; rankdir=”LR”; … }

You’ll have to prefix the name of your subgraphs with cluster: subgraph clusterstep1 { and subgraph clusterstep2 { in order to get the style and label. From the graphiz documentation, section “Subgraphs and Clusters”: The third role for subgraphs directly involves how the graph will be laid out by certain layout engines. If the name … Read more

I wanted to supplement shuvalov’s answer. penwidth is indeed the correct command. Additionally, in shuvalov’s answer penwidth is both a node and an edge property–also correct. The distinction i wanted to make: penwidth, when used as a node property (e.g., “NodeA” [penwidth = 5]) affects the border line weight for that node penwidth, when used … Read more

You use the label property attached to the edge. digraph G { a -> b [ label=”a to b” ]; b -> c [ label=”another label”]; } The above generates a graph that looks something like this.