# Filter tracks

What is Filtering?

Filtering is the process of picking out entire tracks, either manually or based on the value of independent variables (System or User-defined). Filtered tracks and the corresponding video and external (physiological) data are subject to analysis.

Unlike filtering, Nesting picks out segments of tracks. You can combine Filter and Nesting criteria.

▪See Basic rules for combining selection boxes.

To filter tracks

1.Create a new data profile or open an existing one.

2.Locate the variable in the Components pane that you want to use for filtering data, and click the corresponding button.

If you do not see item you are looking for, click the button next to More.

See the next section for details on the independent variables available for filtering.

3.A Filter box appears in the top-left corner of the Data Profiles screen. The Independent Variable values window opens on top.

4.Select the values of the variable for the tracks you want to analyze, and click OK.

5.Drag the Filter box to the desired position in the selection sequence between the Start and the Result box.

6.Repeat steps 2 to 5 to add more Filter boxes and refine your selection.

Notes

▪Scope of the variable. Within a single trial, you can select different data sets depending on the Scope of the variable used (Trial, Arena or Subject). Depending on your setup, a trial may consist of one or more arenas. On its turn, each arena can include one or more subjects.

▪By filtering by a variable with Trial scope, you analyze all data for the trials that you specify, no matters how many subjects and arenas those trials contain.

▪By filtering by a variable with Arena scope, you analyze all subjects recorded in the arenas that you specify, and you ignore the data recorded in other arenas in the same trial.

▪By filtering by a variable with Subject scope, you analyze the tracks referring to the subjects that you specify, and ignore the tracks of other subjects recorded in the same arena and trial.

▪If the Independent variable values window does not list any value available for selection, it means that no values have been assigned to any trial in the Trial List.

▪You can combine different filtering criteria to create complex data selections. To do so, insert multiple Filter boxes in the same sequence.

▪You cannot filter tracks according specific values of external (physiological) data. For example, filter all tracks for which average heart rate was higher than 600 bpm.

▪If you want to edit an existing Filter box, click the Settings button of that box.

See also

▪Create your data selection