labels_to_changepoints

labels_to_changepoints(labels: ndarray) → ndarray

Convert per-sample segment labels to changepoint indices.

Parameters:

labelsnp.ndarray

Segment labels, shape (n_samples,).

Returns:

np.ndarray

Changepoint indices, shape (n_changepoints,). Empty if no changepoints.

Examples

>>> labels = np.array([0]*50 + [1]*50 + [2]*50)
>>> changepoints = labels_to_changepoints(labels)
>>> changepoints
array([50, 100])