# Preferences for default units

Aim

To specify the default units for distance, time and rotation for future experiments.

Procedure

Choose File > Preferences > Default Units.

▪Unit of distance. Choose between mm (millimeters), cm (centimeters), m (meters) or inch (inches).

▪Unit of time. Choose between ms (milliseconds), s (seconds), min (minutes) or hr (hours).

▪Unit of rotation. Choose between deg (degrees; °), rad (radians), grad (gradians; 1 grad = 9/10° or p/200 rad) or rot (rotations).

Notes

▪EthoVision XT measures the distance between two points in pixels. With the Calibration procedure in Arena Settings, these are converted to distance values.

▪Changing the default units in Preferences does not affect the experiment currently open. To change the units in your present experiment, do so in the Experiment Settings > Units.

▪Changing the units does not affect the raw data, only their presentation.

See also

▪Preferences