On Tue, 17 Dec 2019, Artur Tarassow wrote: > Hi, > > (sorry for cross-posting Sven, Jack and Allin -- but I think this got > missed some days ago) > > using latest git, I am bite puzzled why the returned series is not > string-values any more. > > <hansl> > clear > set verbose off > > function series foo (const string s) > >    strings S = defarray(s) >    series ret = 1 >    stringify(ret, S) > >    print ret -o    # series is string-valued >    return ret > end function > > nulldata 4 > > series ser = foo("A") > print ser -o        # series includes numerical obs. > </hansl> Please see section 15.4 of the Gretl User's Guide on string-valued series. This limitation could maybe be relaxed somehow, but it is documented and a workaround is given.