Here is my dot file::

digraph “test” {

node [ shape = circle ];

“state” [ value = “” ];

“IDLE” [ value = “INT:0” ];

“state” -> “IDLE” [

xlabel = “”

minlen = 2

line = “18”

];

}

I added minlen=2 (inch) in the edge attribute. It give splines from[const splines *spline = ED_spl(m_edge);] . In this, I draw edge and compute length of edge using QPainterpath in Qt. But I will not get same or greater length of the edge from graphviz because I need minimum length and here, my minimum length is 2 inch. Is this right attribute parameter of minimum edge length.

I also change Graphviz internal coordinate system to Qt coordinate system for computing edge length but i did not get valid length of the edge when i compute in Qt.