def __init__(self,Y,K):
        """
        y:        phenotype vector
        K:        sample-to-sample covariance matrix (includes noise!)
        """
        self.covar = K
        self.setY(Y)
def __init__ ( self , Y , K ) : self . covar = K self . setY ( Y )
y:        phenotype vector
        K:        sample-to-sample covariance matrix (includes noise!)