I have another question I would like to ask. To draw an ROC curve, I executed the following command: auc.splsda = auroc(sgccda.res, roc.block = "ITS", roc.comp = 2) . The data I am using consists of a list that integrates N data from “ITS” and “r16S”. In this case, the ROC curve is generated, but is the result calculated only from the ITS data? Is it possible to calculate the AUC using both ITS and r16S data?