Data in Trajectory info windows

The Trajectory info windows displays the data about each trajectory for the current frame. The data can be sorted by clicking on the column headers, see chapter Sort trajectories.

The following data is listed in all of the Trajectory info windows:

• Trajectory
  The label of the trajectory and the color of its marker in 3D views. In addition to the color the symbol next to the label also shows if the trajectory and its trace are displayed in 3D views. The following symbols are used:

  •  Both trajectory and trace are displayed.
     Just the trajectory is displayed.

• When a trajectory is empty at the current frame, this is indicated by an open circle, for example .

• If a trajectory consists of more than one part there is plus sign (+) in front of the label. The parts are shown by clicking the plus sign or by using the left and right arrows.

  In the Labeled trajectories window the label can be edited by double-clicking on the label. However, in the other two windows the labels are always Unidentified and Discarded followed by a sequential number, which can be used to separate the trajectories.

• Type
  The type of trajectory, which can be one of the following types.

  • Measured
    A trajectory or a part that has been tracked from the measurement data.

  • Mixed
    A trajectory with a mix of the other trajectory types.

  • Gap-filled
    A trajectory or part that has been calculated with a gap fill function.

  • Virtual
    A trajectory or part that has been calculated from 6DOF body.

  • Edited
    A trajectory or part that has been edited using a smoothing function.

  • Measured slave
    A trajectory or part that has been imported from a Twin slave file.

  • Gap-filled slave
    Gap-filled trajectory or part that has been imported from a Twin slave file.

• ID#
  The sequential id of the short range active marker.

• Fill level
  The percentage of the current measurement range that the trajectory or part is visible. The measurement range is selected using the Timeline control bar.

• Range
  The range of frames, within the measurement range, with data for the trajectory or part.

• X, Y and Z
  The position (in mm) of the trajectory in the current frame. The coordinates use the coordinate system of the motion capture system set up when the system was calibrated.

• Residual
  The average of the different residuals of the 3D point. This is a quality check of the point’s measured position.

  The residual is not available for 2D tracked trajectories.

  The residual is 0 for edited, virtual, gap-filled and interpolated twin slave trajectories.