1. Visualization with help from SCV Erik Brisson Boston University Scientific Computing and Visualization

2. BU Scientific Computing and Visualization 2 How can we help? What software / viz tools to use Managing data Understanding problems Use of color, scale, etc Making animations Programming Data transfer Data conversion Custom / specialized tools

3. BU Scientific Computing and Visualization 3 Packages we support Mathematics and Data Analysis Mathematica MATLAB IDL Scientific Visualization VTK (Paraview) Modeling, Rendering, and Animation Maya OpenGL (OpenSceneGraph) Image Tools ImageMagick

4. BU Scientific Computing and Visualization 4 R.I.P. SGI (NAG) Explorer, AVS, OpenDX

5. BU Scientific Computing and Visualization 5 Example math / analysis package (IDL) ; File: fit_xy.pro N = 10 xy = fltarr(2,N) openr, 1, 'dat/ex_xy.dat' readf, 1, xy close, 1 x = xy(0,*) y = xy(1,*) print, 'x' print, x print, 'y' print, y plot, psym=1, x, y ypoly = poly_fit(x, y, 3) yapprox = ypoly(0) + ypoly(1)*x + ypoly(2)*x^2 + ypoly(3)*x^3 print, 'yapprox' print, yapprox oplot, x, yapprox end

6. BU Scientific Computing and Visualization 6 Output from IDL program

7. BU Scientific Computing and Visualization 7 Plot from IDL program

8. BU Scientific Computing and Visualization 8 More from IDL

9. BU Scientific Computing and Visualization 9 VTK (Visualization Tool Kit) Open source software C++ class libraries Tcl/Tk, Java, Python interface layers Supports scalars, vectors, tensors Supports specialized modeling and visualization techniques

10. BU Scientific Computing and Visualization 10 Paraview

11. BU Scientific Computing and Visualization 11 Paraview

12. BU Scientific Computing and Visualization 12 More general graphics software Maya OpenGL OpenSceneGraph

13. BU Scientific Computing and Visualization 13 Maya rendered: vortex shedding

14. BU Scientific Computing and Visualization 14 Maya rendered: Fan pressure

15. BU Scientific Computing and Visualization 15 Maya rendered: Fan entropy isosurface

16. BU Scientific Computing and Visualization 16 Virtual Environments

17. BU Scientific Computing and Visualization 17 What's in a virtual world? An environment Representations of physical objects Visual models Auditory elements Interactions with objects Representations of people - avatars Communication Gesturing Typing / chatting Telephony Video

18. BU Scientific Computing and Visualization 18 Our goal with DAFFIE Distributed, interactive virtual environment Distributed Interactive Visually and aurally rich Input (models, images and sounds) from variety of available tools Simple import method Script driven Accessible to non-expert users Extensible by programmers

19. BU Scientific Computing and Visualization 19 The DAFFIE event system Communication between agents

20. BU Scientific Computing and Visualization 20 darp scripts: arproom file arproom 2.0 name cart-models enter_xyz 3.0 4.0 4.0 enter_hpr 30.0 -98.0 0.0 group_xyz 0 0 0 group_hpr 0 0 0 group_path../models/purple_cube/ group purple_cube.arpg group_xyz 2 -4 0 group_hpr 60 0 0 group_path../models/blue_cube/ group blue_cube.arpg group_xyz -3 -5 2 group_hpr 0 0 0 group_path../models/orange_sphere/ group orange_sphere.arpg end

21. BU Scientific Computing and Visualization 21 The DVD Wall Tiled, rear projected, passive stereo display system Based on commodity components