How do I display flows, velocities and other vector-based data in IRIS Explorer?
Datasets which have a magnitude and direction at each coordinate are referred to as vector-based. Some examples are flow fields, velocity fields forces and other gradient data. There are two classes of techniques in IRIS Explorer which can be used to display vector-based data: • glyph-based, in which an icon or glyph (usually an arrow) is placed at each location in the field. The magnitude and direction of the field at the location is used to determine the size and orientation of the glyph. In IRIS Explorer, the VectorDisplay module can be used to generate this type of visualization. Run ViewDemo with the 3dvectors.skm script file to see how it works. • particle-tracing, in which weightless particles are released into the field at selected locations. The particles are then moved through the dataset, under the influence of the local value of the field, and the shape of their trajectories contains useful information about the dataset. The NAGAdvectSimple and NAGAdvectAnimate modules are
