Effective Flow Visualization
(NOT Modeling)Colin Ware
VisLab CCOM UNH
StaffKurt Schwehr (Google Earth, COF)Roland Arsenault (GeoZui4D)Briana Sullivan (Flow vis)Matt Plumlee (COF)StudentsPete Mitchell (Flow vis)Stephan Schaeffer (Flow vis)Dan Pineo (Flow vis).
We can do better than this
2D Flow visualization• A landmark study Laidlaw et al
- Image courtesy of D.Laidlaw et al. (2001)
OrientVSBMagnitude
Perceptually optimize forSome sub-set of task
requirements
An optimization process (NSF ITR)
Identify a visualizationMethod and a paramaterization
Streaklets:A generalizedFlow vis technique
Characterize solutions
Define task requirementsAdvection path perceptio
Magnitude perceptionDirection perception
Human In the Loop
Actual solutionsGuidelinesAlgorithmsTheory
Production software
Flow Model GriddedFlow
InteractiveDesigner
Renderer
Source fileRegionBackgroundEtc
Renderingparms
Images
ObjectiveTest Module
Grib2, NetCDF
Ofs modelsFVCOMHYCOMetc
Config
Next stepsIntegration into NowCoast with geotifoutputAnimated output
Next steps3D flow vis and marine mammals
Marine Mammals and Currents
Flow directionInternal wavesFronts
3D Flow Visualization Package for Operational Forecast Models
Status: Has 3D/2D modes.Particle dye poles.Streaklet Field or Particle fieldTemp/salinity profilesWorks with space mouse.
Plans
Flow Model GriddedFlow DB
BiologicalData
VisualizationAnd Analysis
Images
and
Statistics
Plans
Integrated Atmospheric and Ocean flow visualization. (Carlos Lozano, NCEP)Integrating flow models with behavior data (e.g. whales).
Interactive exhibits
ToolsDyepotsStreaklet flields (for overall patterns)
Each streaklet is a pathline traversed as time progresses – can be moved up and down
StreakPots to emphaize major currentsSize Pots – equatorial upwelling
Can be used to “paint” in the flow model and reveal flow patterns
