First Investigation of a signal (time series) - automated part
[AutoCov,AutoCorr,ARPMX,E,ACFsd,NC]=invest0(Y,Pmax);

[AutoCov,AutoCorr,ARPMX,E,ACFsd,NC]=invest0(AutoCov,Pmax,Mode);


Y	time series
Pmax	maximal order (optional)

AutoCov	Autocorrelation
AutoCorr	normalized Autocorrelation
PartACF	Partial Autocorrelation
ARPMX     Autoregressive Parameter for order Pmax-1
E	        Error function E(p)
NC            Number of values (length-missing values)

REFERENCES:
P.J. Brockwell and R.A. Davis "Time Series: Theory and Methods", 2nd ed. Springer, 1991.
M.S. Grewal and A.P. Andrews "Kalman Filtering" Prentice Hall, 1993.
S. Haykin "Adaptive Filter Theory" 3ed. Prentice Hall, 1996.
M.B. Priestley "Spectral Analysis and Time Series" Academic Press, 1981.
W.S. Wei "Time Series Analysis" Addison Wesley, 1990.