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Subsections
Following Edges
When working with very large graphs where the nodes are connected by long
edges it
is useful to navigate through the graph by taking advantage of
the graph structure. This is done by following edges through the graph.
The Follow Edge item of the
Position menu in the menu line
offers this navigation method; alternative: press the e key.
The Follow Edge operation works like this:
- First one node has to be selected by the mouse.
- Then one edge that starts or ends at this node
is highlighted.
- Left-clicking highlights the next edge.
Right-clicking centers the node at the other
end of the highlighted edge.
- From the new node another edge can be selected to be followed
by left-clicking.
- Right-clicking ends the Follow Edge operation.
Follow Edge Dialog Box - History List of Nodes
A history is implemented via the Follow Edge operation
so that the path through the graph can be traced back.
Pressing the h key during the Follow Edge
operation causes the history dialog box to appear
(see Figure 5) and shows all the nodes
encountered during the Follow Edge
operation.
The list of nodes is shown as a list of the following node attributes:
- Title (default)
- Label
- Information field 1, 2, or 3
The Follow Edge Dialog Box is used as follows:
- Selecting a node from the list and then pressing the
Select Node
button centers the selected node in the main window.
- The Next Edge
button enables the
edges connected to the centered node in the main window to be cycled
through. The next edge
to be followed is chosen in this manner.
- Pressing the Follow Edge
button causes the edge selected to be followed.
Figure 4:
aiSee Follow Edge Navigation
 |
Figure 5:
aiSee Follow Edge Dialog Box
 |
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Up: Navigating Through a Graph
Previous: Panner Window for Exploring
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