[Gretl-devel] Re: Probably a bug in stringify()

Am 02.11.2020 um 13:39 schrieb Allin Cottrell: > On Mon, 2 Nov 2020, Artur Tarassow wrote: > >> works only for very special case which may confuse the user. True, it >> is convenient but can be realized by a two-liner: >> <> >> series s = {1; 2; 3} >> stringify(s, defarray("hey", "ho", "aha")) >> </> > ... > > On your two-liner: Yes, that's fine in the simple case, but here's the > sort of thing I had in mind (converted to Sven's style): > > nulldata 8 > strings S = defarray("A", "B", "B", "A", "D", "D", "C", "B") > series sx = S > > That is, your primary data take the form of a sequence of strings, and > the proposed syntax allows you to create a series without the need to > compute the numerically encoded counterpart yourself. Exactly - BTW in this context it might in principle also be useful to have a function that constructs a mapping from the strings array to a vector of numerical (integer) codes. Doesn't have to be C, could be hansl, and I personally haven't needed it so far. Still I could give it a try with hansl if that's wanted.