function to compute or Extract objects to be returned
extractRegressionStats(specObj, fitResults, full.resid.cov = FALSE)a structure of class ffm holding all the information
fitFM object that has been already fit
output from fitFfmDT
an option to calculate the full residual covariance or not
this function operates on the specObje data and the output of fitFfm to get information on the fundamental factor.
specFfm and fitFfmDT for information on the definition of the specFfm
object and the usage of fitFfmDT.