Partial least square discriminant analysis. PLS-DA scores plot showing a significant separation between control subjects (n = 37) and unmedicated PD patients (n = 43) using complete digital maps. The observations coded according to class membership: black square = controls; red square = PD patients.
Ahmed et al. Journal of Biomedical Science 2009 16:63 doi:10.1186/1423-0127-16-63