[Dot] Dot returns a crazy graph when combining same rank and subgraphs (newrank)
Ported Issue from Mantis Original ID: 2379 Reported By: henk
SEVERITY: NORMAL Submitted: 2013-10-02 20:03:04
OS: WINDOWS SERVER 2008R2
OS BUILD: UBUNTU 12.04
PLATFORM: LINUX AND WINDOWS
In attachment input for dot where something very strange happens: elements are placed on top of each other and arcs take strange routes.
Its seems related to using ranking in combination with subgraphs. There are 4 ranks when it goes wrong. When combining second and third rank into one rank, the graph goes to normal.
I know there are arcs from third to second rank. No idea if this is allowed, but the result is at least not as expected.
STEPS TO REPRODUCE
dot -Tpng -ooutput_with_crazy_graph.png < input_with_crazy_graph.txt
I don't know if this is helpfull. I could try to reduce the input, where the problem still exists, but with smaller input?