In Graphviz, how do I align an edge to the top center of a node?

Question

In Graphviz / dot, is it possible to get the edge to connect exactly in the top center of a node? Reading the dot guide, I thought tailport and headport<

Answer 1

I see the same effect under Windows7 - did not try other platforms.

I tried fiddling with the 'port positions', See http://www.graphviz.org/content/attrs#kportPos

e.g. changing the last lines of your code to

  point2 -> point1
  point2 -> C:nw
  point1 -> point3
  point3 -> E:ne
  point1 -> D

gives a (slightly) better positioning of the connecting lines.