PLS-DA is a projection method that separates groups of observations by rotating the PCAs so that a maximum separation among classes, i.e., geographical origin, is obtained. As shown in Fig. 2B, good separation in the score plot of
PLS-DA is a projection methodthat separates groups of observations by rotating the PCAs so that amaximum separation among classes, i.e., geographical origin, isobtained. As shown in Fig. 2B, good separation in the score plot of