的graphviz - SEM残留的协方差

Question

我无法找出如何使用，以绘制两个矩形之间的曲线graphviz如

digraph G { 

SatisfactionF [style=filled, shape = rectangle] 
SatisfactionM [style=filled, shape = rectangle] 
Marital[shape = circle] 

     SatisfactionF -> Marital 
     SatisfactionM -> Marital 
} 

Answer 1

在这里你去：

digraph G { 

{ 
rank = same; 
SatisfactionF [style=filled, shape = rectangle] 
SatisfactionM [style=filled, shape = rectangle] 
} 
Marital[shape = circle] 

     SatisfactionF -> Marital 
     SatisfactionM -> Marital 


SatisfactionF -> SatisfactionM [label = "0.4" tailport=n headport=n dir=both arrowhead=none] 

} 

它给出警告但有用。