Owner's Manual

Topology Views 681
Hierarchy
This layout option configures how to display child objects in relation to their parents. It follows a
three-step process to do this:
1 Layering - This display partitions nodes into levels, then builds a hierarchy by reversing and
splitting edges until each edge is directed downwards and connects two nodes on neighbored
layers.
2 Cross-minimization step - The view reorders nodes on each layer to reduce the number of
edge-crossings. It traverses layers top to bottom, bottom to top, or both, depending on the
method you choose in
Hierarchy Settings , until the total number of crossings no longer
decreases.
3 Bend-reduction step - The view computes the final layout of the hierarchy. This interface
assigns coordinates to nodes and bend points to edges.
Figure 21-19. Topology View–Hierarchy Layout
It supports the following Hierarchy Settings (some refer to the layout process above):
-
Propagation –Check to propagate. When selected, changes to any individual entity automates
recalculation of the positions of connected entities.
The rest of the settings include three tabs (
Layout, Node Rank and Node Order ):