detect_blinks_zero

pypillometry.signal.detect_blinks_zero(sy, min_duration, blink_val=0)

Detect blinks as consecutive sequence of blink_val (e.g., 0 or NaN) of at least min_duration successive values in the signal sy. Detected blinks are put a matrix blinks (nblinks x 2) where start and end are stored as indexes.

blink_val=np.nan matches NaN values; any other value is compared with sy == blink_val.

Parameters:

• sy (np.ndarray) – signal

• min_duration (int) – minimum number of samples for a sequence of missing numbers to be treated as blink

• blink_val (float) – “missing value” code, e.g. 0 or np.nan (default 0)

Return type:

np.ndarray

Returns:

array (nblinks x 2) containing the indices of the start/end of the blinks (both inclusive); empty array if no blinks were found