OptionalcommonOptionaldeltaThe range in which the two x values of the spectra must be to be placed on the same line. It may also be a function that allows to change delta depending on the X values of the spectrum
OptionalxDefines what x values should be kept (x1 : spectrum 1 x values, x2 spectrum 2 x values, weighted: weighted average of both spectra x values)
If
true, only the data considered as common to both spectra is kept. Iffalse, the data y arrays are completed with zeroes where no common values are found