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different ranks for dots

Submitted by Rockair on Fri, 11/11/2011 - 17:59

I have this code:
 digraph g{
 
{rank=same; 2 ;}
{rank=same; 1;}
{rank=same; 3;}
2->3
 
}
 
this is a test code a developed to test this strangeness.
1,2,3 must have different ranks, but this code puts 1 and 2 on the same level. I can simulate this behavior with the addition of the line below:
 
1->2 [color=white, arrowhead=none]
 
anyone know a better way to achieve it?
 
thanks in advance
 

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different ranks for dots

Submitted by erg on Fri, 11/11/2011 - 21:01.

The dot layout puts nodes on different ranks if there is an edge between them, assuming you haven't specified any other constraints. If you want 3 nodes on 3 different ranks, you need to do something like
 
digraph {
1 -> 2 -> 3
}
 
If you don't want to see the edges, use  1 -> 2 -> 3 [style=invis]
Note that using {rank=same ...} specifies that all the nodes in the subgraph share the same rank, so using this with only one node in the subgraph has no effect.
 

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