On Mon, Apr 1, 2024 at 3:56 PM Artur T. <ate...@posteo.de> wrote:
>
> The first time, I play around with the option to store a dataset as a
> gretl database. This works, as mentioned in the command reference, for
> cross-sectional and time-series data but not panel (ok so far).
>
> I tried to store a string-valued series. However, the string-values get
> lost when importing again, only showing the numerical value mapping a
> string to some discrete positive number.
Artur, I think you have the wrong idea about gretl's database (.bin +
.idx) format. Please check out Appendix A.3 of the Gretl User's Guide
("Native database format"): that's all there is to it. It's basically
just a delivery mode for collections of published numerical data --
primarily time series data that includes mixed frequencies. The design
criteria for the format are simplicity and speed of access, period.
There's no support for string-valued series, nor is that planned. Some
very basic editing capacity is supported via the "store" command but
that is unlikely to be extended in any way.
To handle string-valued series via native gretl tools you need to use
our dataset (as opposed to database) formats: gdt or gdtb. If you want
to get fancier than that you should explore gretl's ODBC support.
Allin Cottrell
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