# Nesting over Latency to zone

Aim

To pick out the data collected before or after the subject has entered a specific zone.

example Calculate the velocity of the subject up to when it entered a zone for the first time.

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 latency to enter a zone by that subject, choose Latency to zone under Nesting. See the procedure below.

▪To select data of a subject based on the latency to enter a zone by other subjects, choose Latency to zone under Nesting over subjects. There you find the Actors tab where you can specify which subjects (Actors) entered the selected zone. See Nesting over subjects

Procedure

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

2.In the Latency to Zone window, under Settings, next to Latency to, choose which zone visit you want to use for your data selection.

3.Select the zone of interest and choose from the list at the bottom of the window whether you want to analyze the Interval before zone visit (as in the example above, under Aim) or the Interval after zone visit.

4.Click the Body Points tab (when available), and specify the body points that Latency is based on. Next, select one of the following:

▪All selected points. The data is analyzed before/after all the selected body points were simultaneously in the zone.

▪Any selected point. The data is analyzed before/after at least one of the selected body points entered the zone.

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

Note

▪If you select Latency to zone under Nesting, different subjects in the same arena are analyzed in different track segments because the nesting criterion is defined based on each subject separately.

▪If you select Latency to zone under Nesting over Subjects, different subjects are analyzed in the same track segments, because the nesting criterion is determined by the Actors specified and is valid for all the subjects. See Nesting over Subjects