Runs the Kalman Filter for UC models
Standard methods applicable to UComp objects are print, summary, plot,
fitted, residuals, logLik, AIC, BIC, coef, predict, tsdiag.
Usage
UCfilter(sys)
Value
The same input object with the appropriate fields
filled in, in particular:
yFit: Fitted values of output
yFitV: Variance of fitted values of output
a: State estimates
P: Variance of state estimates (diagonal of covariance matrices)