Using GraphViz to illustrate an extended form game

Question

I am trying to build a diagram of the vast form of the game in GraphViz. Compiling the code leads to a schedule that is correct in every way but one. I want the label “War” to be placed to the left of the edge that it marks, so that the edge is closest to “r”, not “W”.

This is my "game" or schedule:

digraph hierarchy_of_D { graph [rankdir ="UD"] node [color=black,shape=circle] //splines="polyline" I [label="R"] subgraph infoset1 { label="whatever" rank="same" 1 [label="C"] 2 [label="C"] } I -> 1 [label="War"] //fix how this floats right of the line I -> 2 [label="Peace"] 1 -> 2 [style=dashed, dir=none] subgraph info21 { rank="same" 3 [label="(2,2)", rank=sink, shape="plaintext"] 4 [label="(5,1)", rank=sink, shape="plaintext"] 5 [label="(1,5)", rank=sink, shape="plaintext"] 6 [label="(4,4)", rank=sink, shape="plaintext"] } 1 -> 3 [label="War"] 1 -> 4 [label="Peace"] 2 -> 5 [label="War"] 2 -> 6 [label="Peace"] } 

Any ideas? I have already tried the following, which does not do what I want:

 1 -> 3 [label="War/l"] 

See also this question and this question , none of which have an answer. C'mon, it costs triple points!

Answer 1

Triple dots? So the correct answer is that you cannot choose the location of border labels.

However, you can play with headlabel , labeldirection and labelangle :

 digraph hierarchy_of_D { node [color=black,shape=circle] I [label="R"] subgraph infoset1 { label="whatever" rank="same" 1 [label="C"] 2 [label="C"] } I -> 1 [headlabel="War", labeldistance=3, labelangle=40] I -> 2 [headlabel="Peace", labeldistance=3, labelangle=-40] 1 -> 2 [style=dashed, dir=none] subgraph info21 { rank="same" 3 [label="(2,2)", rank=sink, shape="plaintext"] 4 [label="(5,1)", rank=sink, shape="plaintext"] 5 [label="(1,5)", rank=sink, shape="plaintext"] 6 [label="(4,4)", rank=sink, shape="plaintext"] } 1 -> 3 [headlabel="War", labeldistance=3, labelangle=40] 1 -> 4 [headlabel="Peace", labeldistance=3, labelangle=-40] 2 -> 5 [headlabel="War", labeldistance=3, labelangle=40] 2 -> 6 [headlabel="Peace", labeldistance=3, labelangle=-40] } 

Conclusion:

Answer 2

Just for fun, another workaround I just found:

By pushing straight edges between nodes using splines=false and defining edges twice, the edges are drawn as if they were one single edge, but the labels of each edge that you draw (most of the time) on different sides of the edge.

Therefore, having one edge without a label and another with a label, you can influence the placement of the label (s) of the edge (s).

Your example:

 digraph hierarchy_of_D { splines=false; node [color=black,shape=circle] I [label="R"] subgraph infoset1 { rank="same" 1 [label="C"] 2 [label="C"] } I -> 1 [label="War "] I -> 1 [label=" "] I -> 2 [label=""] I -> 2 [label="Peace"] 1 -> 2 [style=dashed, dir=none] subgraph info21 { rank="same" 3 [label="(2,2)", rank=sink, shape="plaintext"] 4 [label="(5,1)", rank=sink, shape="plaintext"] 5 [label="(1,5)", rank=sink, shape="plaintext"] 6 [label="(4,4)", rank=sink, shape="plaintext"] } 1 -> 3 [label="War"] 1 -> 3 [label=""] 1 -> 4 [label=""] 1 -> 4 [label="Peace"] 2 -> 5 [label=""] 2 -> 5 [label="War "] 2 -> 6 [label=""] 2 -> 6 [label="Peace"]} 

And the conclusion:

This is not ideal, and your mileage may vary depending on the schedule, but I thought it was worth mentioning it.