Nesting over Proximity

Aim

To pick out data collected when one or more subjects (Actors) were within a user-defined distance from one or more other subjects (Receivers).

example Calculate the average mobility when the subject was in proximity of other subjects.

Nesting vs. Nesting over Subjects

Notice the difference when there are multiple subjects in the same arena:

▪To select data of a subject based on the Proximity behavior of that subject, choose Proximity under Nesting. In the Receivers tab you specify which subject was in proximity of the focal subject. See the procedure below.

▪To select data of a subject based on the Proximity behavior of other subjects, choose Proximity under Nesting over Subjects. There you find the Actors tab and the Receivers tab where you can specify which subjects (Actors) were in proximity of which other subjects (Receivers). See Nesting over subjects

Procedure

1.In the Data Profile, under Nesting click the button next to Proximity.

2.In the Proximity window, select the Proximity state that defines the intervals to analyze.

▪Enter the In proximity threshold and the Not in proximity threshold.

▪Under Calculate nesting for, choose which state defines the intervals.

For details about how proximity is calculated, see Dependent Variables in Detail > Proximity.

3.Click the Body Points tab (when available), and specify the body points that define proximity. Choose whether proximity is based on all the chosen points being in proximity simultaneously (All selected points) or not (Any selected point).

4.Click OK. Proceed with step 4 in How to select track segments.