BMECH_PHASE_ANGLE(fld, evt1, evt2) computes phase angles between evt1 and evt2 for channels ARGUMENTS fld ... Folder to batch process (string). chns ... Channels for which to compute phase angle. Channels must be 1 x n (exploded) event1 ... start of section of interest for angle data event2 ... end of section of interest for angle data pad_type ... num, option to pad with zeros or Nans. Default is NaN