I am doing a study on classifying fruits on visible region taking spectra with Vis-NIR spectroscopy. I want to classify the fruit based on maturity in terms of skin color. I am trying to use SVMC, SIMCA and KNN with PLS toolbox. I went to the wiki site of the eigenvector, but the procedure described there is a bit blurry to me. It would be great if somebody could tell me the stepwise procedure on how to perform these on PLStoolbox using Matlab.

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