When you ask for a periodogram, by
selecting /variable/spectrum/periodogram
the dialog window has a box for selecting the bandwith, but
it has no sense the selection of a bandwith here, because the values of
the periodogram must not be weighted, and in fact they aren't. Gretl
presents the crude periodogram values and they don't depend on the
bandwidth you put in the box.
--
Ignacio Diaz-Emparanza
DEPARTAMENTO DE ECONOMÍA APLICADA III (ECONOMETRÍA Y ESTADÍSTICA)
UPV/EHU
Avda. Lehendakari Aguirre, 83 | 48015 BILBAO
T.: +34 946013732 | F.: +34 946013754
www.ea3.ehu.es