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ArcJmp and Snap2

ab for nformation isualization and valuation. L. I. V. E. ArcJmp and Snap2. David DesJardins Census Chris North Department of Computer Science Virginia Tech. Historical Context. Snap-Together Visualization Dynamaps ArcJmp Snap2. Dynamaps. Snap spin-off North (UMD, Census)

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ArcJmp and Snap2

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  1. ab for nformation isualization and valuation L I V E ArcJmp and Snap2 David DesJardins Census Chris North Department of Computer Science Virginia Tech

  2. Historical Context • Snap-Together Visualization • Dynamaps • ArcJmp • Snap2

  3. Dynamaps • Snap spin-off • North (UMD, Census) • Goals: • External users • Data discovery • Census cd-rom products e.g. Counties USA? • Petkunas (Census) • Future: • Web version • UMD

  4. ArcJmp • Goals: • Census internal users • Analysts, power users • SAS JMP statistical and exploratory data analysis • ESRI ArcView geography (MapObjects) • North, DesJardins, Williams (Census)

  5. ArcJmp • Implementation: • JMP 4 • MapObjects 2.1 (Shape files) • VisualBasic • Available for download • http://infovis.cs.vt.edu/census/ • Future: • Data import • MapObjects → ArcView 8.1 • Link to Dynamaps ActiveX API ArcJmp ActiveX API

  6. Snap-Together Visualization • Initial Goals • Users link tools on the fly • Flexibility • Users, non-programmers • Extensible, leverage 3rd party components • Snap1 • North (UMD, Census) • Snap2 • North (VaTech)

  7. Databases Flexible Data schemas Non-programmers Rapid rate of change Lots UI / Visualization Brittle Code? Programmers Sloooow Few Flexibility Mismatch

  8. 1. Load data into views 2. Link views together Snap1 User Interface

  9. Census Scenario

  10. Census Scenario

  11. Relational Model → Visualization • View = relation • Item = tuple • Link = join

  12. Problems / Additional Goals • Universal Visualization Server • User Interface: • Collaboration: publishing and sharing data • Web, universal • User interface for linking • Window management • Architecture: • Runtime extensible, repository • Technology independent? • Local or remote databases

  13. More! • Example: Census on the web QuickFacts AFF

  14. Snap2 • Browser based, frames • Save visualizations, post as single URL • Developers upload components

  15. Visualization Schemas • Analogous to data schema diagrams • Visual language for Snap model • Vis • Data action join action • Vis • Data

  16. DataCompass • “Where can I go from here?” • States 1:M • Vis: Map • Data: Counties • Counties • County 1:1 1:1 1:M • Tracts • Metro Areas

  17. Software Architecture

  18. Future: “Datafaces” • Integrating data schemas + visualization schemas • Simultaneously manipulate data and UI

  19. Datafaces

  20. Datafaces

  21. Info • Chris North • http://infovis.cs.vt.edu/ • north@cs.vt.edu • David DesJardins • edaplus2@juno.com • 301-292-5531 • ArcJmp: • Hands on session: 1:30pm 3225-4 • Census contact: Todd Williams (SRD) 301-457-4863 • Download: http://infovis.cs.vt.edu/census/

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