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Extending TreeJuxtaposer
Nicholas Chen ([email protected])
Maryam Farboodi ([email protected])
May 9, 2006
Rendering Infrastructure
Hierarchy of SplitLines segments each dimension of the screen
Screen elements are bounded by pairs of SplitLines in each dimension
Relatively positioned so updates propagate
Before and After
Note how all nodes at a certain height are at the same horizontal position
Before and After
SplitLines are created on the horizontal axis for each distance from the root
Pan and Zoom Interaction
Stretching and squishing will distort the edge lengths
Instead we implement panning and zooming Simulated!
Pan and Zoom Interaction
Stretching and squishing will distort the edge lengths
Instead we implement panning and zooming Simulated!
Structural Differences
and : Phylogenetic trees and : Nodes Similarity score of and Best Corresponding Node (BCN) of Simplified Spanning Tree (SST) of in
Influential factors: Topology (node placements) Edge lengths
11 Tv 22 Tv
2v1v
1v
2T1T
1v 2T
Algorithm
Objectives: Real time computation:
Pre-processing time: Query time:
Low space complexity:
Algorithm: Identifying BCN for each node Computing necessary similarity scores for each
node
)(nO
)log( nnO)(log2 nO
Main Contribution
Edge-length-based similarity score Force BCN of to be on SST of in Identifying BCN of
For each node on SST of in Treat the intersecting node as a group Use the total weight of the subtree beneath
Do not interact with leaves individually
1v1v 2T1v
1v 2T2v
2v
