Data Analysis, Chemometrics, Spectroscopy, Raman Spectroscopy, Cosmic Rays.
equally spaced wavenumbers and i = 2, …, n. This step annihilates linear and slow moving curve linear trends, while sharp thin spikes will be preserved. Now, z(i) = 0.6745 (∇x(i)-M) / MAD So there is only an extra step included in which the difference between consecutive values are included. #