Olduvai Accordion Drawing http:olduvai'sf'net

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Olduvai /Accordion Drawinghttp//olduvai.sf.net

• Tamara Munzner, James Slack, Kristian Hildebrand
• University of British Columbia

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TreeJuxtaposer

• Visualization of phylogenetic trees
• Interactive comparison of several trees with over
  one million nodes
• Focus Context
• Guaranteed visibility
• User-defined groups
• Searching

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FocusContext

• Display large datasets using scalable drawing
  techniques
• Stretch interesting details, smoosh surroundings
• Interaction uses a rubber sheet with tacked down
  borders approach
• Never push nodes off-screen
• Never lose track of marked groups of interest

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User-Defined Groups

• A group is a forest of color identified nodes
• Select nodes or subtrees for group inclusion
• Guranteed visibility of groups
• Marked groups drawn even when small

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Searching

• Text based search, reduce search results as you
  type
• Search for nodes of interest with mouse

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Tree Comparison

• Using our Best Corresponding Node (BCN)
  algorithm
• Mouse-over highlighting
• Simultaneous tree navigation
• Group selection across trees

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SequenceJuxtaposer

• Navigation and comparison of biomolecular
  sequences
• Aligned sequences shown horizontally
• Same rubber sheet interaction metaphor as
  TreeJuxtaposer
• Browse large collections of sequences of 30
  million nodes
• Differences in aligned columns are highlighted
• Motif searching
• Visualize annotations

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Differences

• Difference threshold assists in determining
  aligned nucleotides, shows possible strong
  phylogenetic signals

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Searching

• Motif searching
• Matching bases are marked as landmarks and are
  guaranteed to be visible

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Annotations

• Include annotations to understand sequences

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Webpage

• Olduvai online http//olduvai.sf.net