On Sun, 16 Sep 2012, Data Analytics Corp. wrote:

> Hi,
>
> I have a monthly time series of the Dow Jones Industrial Index beginning
> 1928:10.  I'd like to create a new variable that is just the month
> number: 10, 11, 12, 1, 2, 3,....   How can I do this?  I thought there
> would be a month function in Gretl, but I don't see one.  This question,
> of course, extends to the year (1928, 1928, 1929, 1929,...) and quarter
> if I have quarterly data.

Does this help?

<hansl>
open bjg.gdt
series year  = 1949 + floor((t-1)/12)
series month = 1 + ((t-1)%12)
</hansl>

--------------------------------------------------
  Riccardo (Jack) Lucchetti
  Dipartimento di Economia

  Università Politecnica delle Marche
  (formerly known as Università di Ancona)

  r.lucchetti(a)univpm.it
  http://www2.econ.univpm.it/servizi/hpp/lucchetti
--------------------------------------------------

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