ParaView Stream Tracer

Stream Tracer Filter in ParaView
Stream Tracer Filter in ParaView

The Stream Tracer filter uses the VTK filter vtkDistributedStreamTracerFilter. The filter generates streamlines for the active data set.

  1. First the user selects the data they wish to operate on from the Selection Window. It will be highlighted when this occurs.
  2. The user can then select Filter->Alphabetical->Stream Tracer from the main menu.
  3. The upper section determines the properties of the Stream Tracer.
    1. The Vectors pull-down menu allows the user to select which vector to use for the stream tracers.
    2. The Max. Propagation menu sets the maximum propagation to be either by time or length.
    3. The Init. Step Len. menu can be set to time, length, or cell length.
    4. The Integration Direction menu can be set to forward, backward, or both.
    5. The Max. Steps determines the maximum number of steps the integrator is to take.
    6. The Term. Speed determines when a stream tracer is to end since its velocity has effectively reached zero (which is this terminal or ending speed).
    7. The Integrator Type menu allows the user to choose between using Runge-Kutta 2, Runge-Kutta 4, and Runge-Kutta 4/5 integration.
  4. The lower section determines the properties of the Seed.
    1. The Seed Type menu allows the user to choose between seeding the streamlines with a point cloud or a line.
    2. The Point Widget allows placement of the point widget when point cloud is selected above.
    3. The Line Widget allows placement of the line widget when line is selected above.
    4. The Show Point checkbox toggles on/off the visibility of the point or line widget.
    5. The Point boxes allow the user to position the point widget for seeding the stream tracers.
    6. The Radius box sets the radius when point cloud is selected above.
    7. The Number of Points box sets the number of points when point cloud is selected above.
  5. The Apply button must be pressed before the Outline will be generated.

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