7:15 p.m.
Hi all,
I've got a script that generates a bunch of auxiliary series that I don't want to
keep in the dataset, so I put "delete thislist thatlist (etc.)" as the last line
in the script. When I run it, I get a message (in the output) saying no series were
deleted. When I try to delete them manually, I get an error saying "Cannot delete
(whatever): variable is in use." However if I reload the dataset, the extra series
are gone, so they're being deleted somehow.
Thoughts welcome...
PS
3:04 p.m.
On Fri, 2 Sep 2016, Summers, Peter wrote:
Hi all,
I've got a script that generates a bunch of auxiliary series that
I don't want to keep in the dataset, so I put "delete thislist
thatlist (etc.)" as the last line in the script. When I run it, I
get a message (in the output) saying no series were deleted. When
I try to delete them manually, I get an error saying "Cannot
delete (whatever): variable is in use." However if I reload the
dataset, the extra series are gone, so they're being deleted
somehow.
Well, if you don't explicitly save the dataset after running your
script then any added variables will automatically disappear, and so
won't be there when the dataset is reloaded.
Gretl is somewhat conservative about letting you delete series in a
given session because that can break existing lists, saved models
and so on, but reloading the dataset starts a new session so those
worries do not apply.
Allin Cottrell
3:36 p.m.
Gretl is somewhat conservative about letting you delete series in a given session because
that can break existing lists, saved models and so on, but reloading the dataset starts a
new session so those worries do not apply.
That's what I thought might be going on, but I don't have any saved models or
lists, and this isn't in a saved session. This is for a JAE replication package, and I
just wanted to have the script clean up the dataset when finished so it's back to the
original state. That's not crucial, and I could just remove the delete command and
leave the "cleanup" to the next user. However this behavior's also
inconsistent with the documentation regarding "delete thislist" where
"thislist" is a named list, so I thought it might be a bug.
PS
Sent from my iPad
On Sep 3, 2016, at 11:04 AM, Allin Cottrell
<cottrell@wfu.edu<mailto:cottrell@wfu.edu>> wrote:
On Fri, 2 Sep 2016, Summers, Peter wrote:
Hi all,
I've got a script that generates a bunch of auxiliary series that I don't want to
keep in the dataset, so I put "delete thislist thatlist (etc.)" as the last line
in the script. When I run it, I get a message (in the output) saying no series were
deleted. When I try to delete them manually, I get an error saying "Cannot delete
(whatever): variable is in use." However if I reload the dataset, the extra series
are gone, so they're being deleted somehow.
Well, if you don't explicitly save the dataset after running your
script then any added variables will automatically disappear, and so won't be there
when the dataset is reloaded.
Gretl is somewhat conservative about letting you delete series in a given session because
that can break existing lists, saved models and so on, but reloading the dataset starts a
new session so those worries do not apply.
Allin Cottrell
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5:23 p.m.
On Sat, 3 Sep 2016, Summers, Peter wrote:
This is for a JAE replication package, and I just wanted to have
the script clean up the dataset when finished so it's back to the
original state. That's not crucial, and I could just remove the
delete command and leave the "cleanup" to the next user.
I think we must be at cross-purposes here. Why is any cleanup
required? You just don't save the dataset with the temporary
added series, after running your script. The dataset remains
unchanged.
I would say that a replication script should start by opening a
specified datafile, and make no changes to that datafile (though it
may make changes to the dataset in memory).
Be that as it may, here's a little example which shows what's
allowed:
<hansl>
open data4-10
list X = 2 3 4
list sX = square(X)
ols 1 0 X
delete sX
eval sX
</hansl>
The line "delete sX" deletes the three added series, but not the
list sX, which becomes empty. But if we tried "delete X" we would
get "No variables were deleted (some data were in use)". The
relevant series are "in use" in the sense that they're regressors in
the last named model and might be called upon in the context of
tests on that model.
Allin
5:40 p.m.
One more thought on this: if you're running a replication script in
the GUI and want to make sure you don't inadvertently save a
modified version of the dataset, overwriting the original, you could
add a "clear" command at the end.
Allin
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Summers, Peter