Description and processing of functional data arising from juggling trajectories

Abstract

In this data introduction paper we discuss different aspects of a juggling dataset collected in 1998 at the motor control laboratory in the McGill University Department of Psychology. The juggler was asked to juggle three balls and the x, y, z position of his index finger was recorded. This data consists of ten juggling trials, each lasting 10 seconds, with 11–13 cycles per trial. We also describe a set of processing steps applied to this dataset. In particular, the raw data was smoothed and a new coordinate system was defined. Finally, we provide a few initial observations from examining the raw data.