Hi, I want to train a classifier using my own covariance matrix and/or use data that are already whitened (using a covariance matrix that was estimated from more data than the data that are fed into the classifier). However, I do not see any option to supply a covariance matrix to fitcsdiscr. Is there a way to do this? There is a function called makecdiscr that allows one to supply a covariance matrix, but this seems to create a classifier without fitting/training? Or is the outcome of makecdiscr the same as that of fitcsdiscr, just based on different inputs?