num,den] = invfreqs/invfreqz(mag,freq,nb,na) ... warnings for
invfreqs///invfreqz: (Matrix is close to singular or badly
scaled.Results may be inaccurate.///Warning: W has values outside the
interval [0,pi]. INVFREQZ aliases such values into this interval and
designs a real filter. To design a complex filter, use the 'complex'
I have the same problem that you also indicated before for invfreqs function, can you explain how I can solve this problem...