Say I have a directional tree with the following edges:
nodeA --> nodeB
nodeA --> nodeC
nodeB --> nodeD
nodeC --> nodeE
nodeE --> nodeD
This means that the following nodes are of the following generations:
nodeA = 1
nodeB = 2
nodeC = 2
nodeD = 3, 4
nodeE = 3
What would be an appropriate term to call a visualization of this type of graphical structure, where one axis is constrained to generation count? For example, the root node (node A) is at x=1. Then node B and C are at x =2. Node E is at x=3. Node D is repeated in this visualization; one representation is at x=3, the other at x=4. All edges are included as usual between the appropriate nodes.
Are there any software available to produce this type of visualization?
Is there an standardized (or at least eloquent) way to specify such a visualization that can handle these "repeated" nodes while constraining one axis to generation count?