Hi Allin and Sven,
Am 11.11.19 um 08:32 schrieb Sven Schreiber:
Am 11.11.2019 um 01:36 schrieb Allin Cottrell:
On Sun, 10 Nov 2019, Artur Tarassow wrote:
I just saw that when the time-dimension of a panel data set is
restricted, the 'sample' display at the bottom of the main menu does
not show the right time indices.
See the screenshot attached where I restricted time to the range
2<=time<=10 but the shown indices are still <Panel: sample 1:1 - 10:9>.
Of course, the actual data set in the background is correctly
restricted.
Gretl's basic "panel first period" is always 1 by construction: the
first period in the sample range. If the dataset has, for example, a
"year" variable, then "period 1" may correspond to a different year
depending on subsampling. And if you've set observation markers of the
form "individual:date" these will look "right" after subsampling.
Thanks for clarification, Allin.
Interesting point about the obs markers. I'm wondering whether it could
make sense to apply "semi-markers" automatically when the time dimension
in the panel is defined.
So after a command like:
setobs 4 1990:1 --panel-time
that might imply setting obs markers of the form "G1:1990-1" or
something like that. (G for 'group' which I think we use in gretl for
the cross-section dimension.) Of course only if no other markers are
defined already.
Sounds 'natural' to me -- I mean that would be the equivalent to the
behavior when working with time-series.
Thanks,
Artur
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