how to extract non orthogonal sources how to make multifactor matrix non orthogonal does factor rotation work with orthogonal bases? can factor rotation be pca can factor rotation work with orthogonal bases what kind of source can be obtained from random linear combinations what is non orthogonal source can ica/pca be used to reconstruct orthogonal sources how to obtain non orthogonal sources in factor analysis when factor rotation is used what does it use what does pca do in data analysis does factor rotation work what is pca factor rotation which method of factors analysis works when the base is non orthogonal? what is the problem with pca what kind of data is an orthogonal base what algorithm does pca use why is factor rotation nonorthogonal why is pca needed for non orthogonal data why does pca not work