figure showsthatthe fitting parametersofeachbandareglobally
grouped altogether.Themostimportantparameteristherefore
more thepresenceofadecompositionbandthanitsprofile. Itis
thus necessarytoaddaspectraldecompositionstep,whichgoes
deeper inthemorphologicalanalysisoftheCHstretchingregion,
in ordertoobtainagoodclusteringdependingonthechemical
families and/orgeographicaloriginofthetreespecies.Workingon
the morphologyoftheCHspectralregioncanbesufficiently
informativeifthetreatmentprocedureiswelldefined. Indeed,
choosing thecorrectnumberandpositionofbandsforthespectral
decomposition isacriticalpointtogetarelevantdescriptionofthe
spectra morphology.