# Nesting over a Free interval

With Nesting over a Free interval you can define the beginning and the end of a track segment, and analyze the dependent variables within that segment.

For example, define an interval that goes from the start of the track to when the subject has explored an object for a total of 30 seconds. Then, analyze the zones that the subject visited, or calculate the average speed in that interval.

▪Nest over a Free interval

▪Examples of Nesting over a Free interval

See also:

▪Free interval in the Analysis profile