Dear all,

When I do plsda(). I found I got exactly same plsda score plot between chosing mode “classic” and “regression”.

I have three groups for Y matrix which is different drug dosage treatment . I thought the group order matters. So I chose regression. But I cannot perceive any difference with “classic” mode.

I tried to process same data in metaoboanalyst online below. And I can got two different plots. Is anyone know the reason?thanks a lot in advance!