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Data Visualization with AVS: Tools & Techniques

Explore AVS components, data flow models, filters, and more for effective data input and output visualization. Dive into AVS history, application systems, networks, and development modules to enhance your data visualization skills.

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Data Visualization with AVS: Tools & Techniques

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  1. Design Patterns and Component Frameworks Presentation Nathan Conklin Spring 2002 CS 6704

  2. Course Context • Design Patterns (Strategy, Visitor, UML) • Component Frameworks (JavaBeans, COM+, .NET, CORBA) • Midterm • Enabling Technologies (EJB, RMI, OAA, XML, CCA, JINI, WO) • Architectures (Web Services, 2-tier, 3-tier) • Education & Development (Patterns in Education, XP) • End-User Component Programming (AVS, Khoros, Visual Prog.) • Architecture & Component Framework (P2P, STL) • Final

  3. End-User Component Programming Nathan Conklin, Yonqun He Qinwei Zhu, Jiunwei Chen Spring 2002 CS 6704

  4. (IBM’s Data Explorer) PV-Wave Component Programming Tools apE (Animation Production Environment) Sieve

  5. Data Data Reader Statistical Module Output Writer Data Flow Model • Data input • Computational Components • Filters • Mappers • Data output

  6. Further Information • AVS – http://www.avs.com/ • Khoros – http://www.khoral.com/ • PV-Wave – http://www.vni.com/ • IRIS Explorer – http://www.nag.co.uk/Welcome_IEC.html • OpenDX – http://www.opendx.org/ • DataSplash (Tioga) – http://datasplash.cs.berkeley.edu/ • apE – Dyer, D., "A dataflow toolkit for visualization," IEEE Computer Graphics and Applications 10(4), pp. 60--69, 1990. • Sieve – http://simon.cs.vt.edu/sieve/

  7. Nathan Conklin Spring 2002 CS 6704

  8. Overview & History • Application Visualization System • 1989 IEEE Computer Graphics and Applications • Scientific Visualization • Products • AVS/5, AVS/Express • Gsharp, Toolmaster • MUSE, OpenViz, VizWorks

  9. Data Flow Example • AVS Network • Modules • Ports • Image Viewer

  10. Modules and Ports • Data Inputs • Some optional • AVS data type • Types checked as built • Shows possible connections • Input Parameters • How processed • Interactively changed • Data Outputs

  11. Subsystems • Network Editor • Control Panel • Image Viewer • Graph Viewer • Geometry Viewer

  12. Network Editor • CLI • Module Library • Workspace • Network • Modules • Ports • Connections

  13. Example Network #!/usr/bin/avs –network version 5.02 (50.65 sg2) module "read field.user.0" -xy 398,22 -ex $Path/avs_library/mongo module "volume bounds.user.1" -xy 408,172 -ex $Path/avs_library/mongo module "geometry viewer.user.3" -xy 328,262 port_connect "read field.user.0":0 "volume bounds.user.1":0 port_connect "volume bounds.user.1":0 "geometry viewer.user.3":0 panel "read field.user.0" -w panel -p "Top Level Stack" -xy 0,108 -wh 256,324 panel "volume bounds.user.1" -w panel -p "Top Level Stack" -xy 0,108 -wh 138,196 panel "geometry viewer.user.3!display" -w container -p ui -xy 732,469 -wh 542,515 manipulator "read field.user.0:Read Field Browser" -w browser -p "read field.user.0" -xy 10,10 -wh 236,194 manipulator "volume bounds.user.1:Colored Bounds" -w toggle -p "volume bounds.user.1" -xy 10,164 -wh 118,22 manipulator "geometry viewer.user.3":"Update Always" -w none manipulator "geometry viewer.user.3":"Update Image" -w none

  14. Control Panel

  15. Image Viewer

  16. Graph Viewer

  17. Geometry Viewer

  18. Custom Modules • International AVS Centre • http://www.iavsc.org/ • AVS Community • Documentation • News • Module Repository • Source • Documentation

  19. Module Generator • Generates Skeleton Modules • Source in C or FORTRAN • User can customize the module interface • Reserved areas for user-supplied code • Subroutine Modules • Module initialized and process sleeps • AVS Flow Executive wakes module • Module computes and returns output data • Coroutine Modules • Active, autonomous modules • Continually processing and passing data • Typically used for simulations

  20. Further Information • Center for Scientific Visualization and Animation • Director - Ron Kriz (rkriz@vt.edu) • Sun Workstations • pluto.sv.vt.edu • venus.sv.vt.edu • ESM 4714

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