Re: [Gretl-devel] ema, obs and optional parameter
El lun, 15-02-2010 a las 16:40 -0500, Allin Cottrell escribió:
OK, I think I have a solution. As you suggested originally,
we'll
make "obs" consistent, such that it always gives a series
containing the 1-based index of the observations, regardless of
the periodicity of the data.
OK.
This means that, e.g., "(obs==1970)" will not work to pick
out the
observation for 1970 in an annual time series. But if you want to
do that you can use the function obsnum(), as in
series d70 = (obs==obsnum(1970))? 1 : 0
(I had forgotten about obsnum, but it's clearly the tool for the
job here.)
This will do the things much more clear for the user, I think.
But it is another backward incompatible change, so please remember, if
possible, to put a warning for the case of someone uses the old format,
and update the manual. Thank you.
--
Ignacio Diaz-Emparanza
DEPARTAMENTO DE ECONOMÍA APLICADA III (ECONOMETRÍA Y ESTADÍSTICA)
UPV/EHU
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