pymovements.datasets.base.Dataset.pos2vel

Dataset.pos2vel(method: str = 'smooth', verbose: bool = True, **kwargs) → None

Compute gaze velocites in dva/s from dva coordinates.

This requires an experiment definition and also assumes that the columns ‘x_left_dva’,

‘y_left_dva’, ‘x_right_dva’ and ‘y_right_dva’ are available in the gaze dataframe.

After success, the gaze dataframe is extended by the columns ‘x_left_vel’, ‘y_left_vel’, ‘x_right_vel’ and, ‘y_right_vel’.

Parameters:

• method (str) – Computation method. See pos2vel() for details, default: smooth.

• verbose (bool) – If True, show progress of computation.

• **kwargs – Additional keyword arguments to be passed to the pos2vel() method.

Raises:

AttributeError – If gaze is None or there are no gaze dataframes present in the gaze attribute, or if experiment is None.