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DataSplash

DataSplash. A Database Visualization Environment. The UC Berkeley Tioga Project Chris Olston, Allison Woodruff, Alexander Aiken, Michael Chu, Vuk Ercegovac, Mark Lin, Mybrid Spalding, Michael Stonebraker. Browsing a Visualization. Navigation Mode Buttons. Layer Manager. Main Canvas. PAN.

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DataSplash

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  1. DataSplash A Database Visualization Environment The UC Berkeley Tioga Project Chris Olston, Allison Woodruff, Alexander Aiken, Michael Chu, Vuk Ercegovac, Mark Lin, Mybrid Spalding, Michael Stonebraker

  2. Browsing a Visualization Navigation Mode Buttons Layer Manager Main Canvas

  3. PAN ZOOM Current Zoom Navigation • Interactively browse large data sets • Pan by dragging directly on the canvas • Zoom by dragging up and down in the layer manager

  4. Layers • Just like stacked transparency slides! • Zooming controls which layers are visible • Layers contain different objects State Polygon Layer Current Zoom State Abbreviation Layer Visible Layers Layer Not Visible

  5. Height = Elevation Creating a Visualization • Paint Program Interface • Paint objects as in a standard paint program • Assign graphical properties of objects to database table attributes

  6. Programming Layers • Resize layer bars in layer manager • Controls which layers are visible at which zoom levels • For example, we only want fine detail layers to be visible when the user zooms in Resize Current Zoom

  7. Querying a Visualization • This visualization shows which political party each state has favored since 1952 • But which states voted for which presidential candidates in which elections? Red: Democrat Blue: Republican

  8. Visual Joins • Each presidential candidate has an associated portal (sub-window) • Each portal shows the states that voted for the candidate Presidential Candidates States

  9. Specifying Visual Joins • Result: A 3-way visual join • Pick up the visualization of one table and drop it into the visualization of another table Parties Candidates States

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