first_pass_fixation_count

pymovements.measure.reading.first_pass_fixation_count(fixations: DataFrame) → DataFrame

Compute the number of fixations during the first pass (FPFC).

Parameters:

fixations (pl.DataFrame) – Fixation table containing at least trial, page, word_idx, and is_first_pass columns.

Returns:

DataFrame with columns trial, page, word_idx, and FPFC.

Return type:

pl.DataFrame