Olduvai /Accordion Drawing

http://olduvai.sf.net

Tamara Munzner, James Slack, Kristian Hildebrand

University of British Columbia

TreeJuxtaposer

Visualization of phylogenetic trees

Interactive comparison of several trees with over one million nodes

Focus + Context Guaranteed visibility User-defined groups Searching

Focus+Context

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

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

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

Searching

Tree Comparison

Using our Best Corresponding Node (BCN) algorithm: Mouse-over highlighting Simultaneous tree

navigation Group selection across

trees

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

Differences

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

Searching

Motif searching Matching bases are marked as landmarks and are

guaranteed to be visible

Annotations

Include annotations to understand sequences

Webpage

Olduvai online: http://olduvai.sf.net