8:36 a.m.
dear everyone,
when i write in gretl the scripts
"
open greene22_2
discrete Z5
list X=dummify(Z5) --drop-first
"
then I run the program and get the results,
"
gretl version 1.9.92
Current session: 2015-03-14 16:31
? open greene22_2
Read datafile C:\Program Files\gretl\data\greene\greene22_2.gdt
periodicity: 1, maxobs: 601
observations range: 1 to 601
Listing 10 variables:
0) const 1) Y 2) Z1 3) Z2 4) Z3
5) Z4 6) Z5 7) Z6 8) Z7 9) Z8
? discrete Z5
? list X=dummify(Z5) --drop-first
list X=dummify(Z5) --drop-
The symbol 'drop' is
undefined
Error executing script: halting
list X=dummify(Z5) --drop-first
"
why did i encounter the error?
best,
shi,qi
2:08 p.m.
Am 14.03.2015 um 09:36 schrieb Qi Shi:
? list X=dummify(Z5) --drop-first
> list X=dummify(Z5) --drop-
The symbol 'drop' is undefined
Error executing script: halting
> list X=dummify(Z5) --drop-first
"
why did i encounter the error?
You're mixing up the 'dummify' command with the 'dummify()' function.
Only the command takes these double-dash-style options like
"--drop-first". For the function you have a second argument, please see
the help for that (haven't used it myself yet).
Remark for Allin and Jack:
BTW, I think the error message is strange insofar as IMO the parser
should complain already about the "--" in there, not about the "drop"
word, no? But perhaps this has been changed since last release.
cheers,
sven
2:15 p.m.
On Sat, 14 Mar 2015, Sven Schreiber wrote:
Am 14.03.2015 um 09:36 schrieb Qi Shi:
> ? list X=dummify(Z5) --drop-first
>> list X=dummify(Z5) --drop-
> The symbol 'drop' is undefined
>
> Error executing script: halting
>> list X=dummify(Z5) --drop-first
> "
>
> why did i encounter the error?
>
You're mixing up the 'dummify' command with the 'dummify()'
function.
Only the command takes these double-dash-style options like
"--drop-first". For the function you have a second argument, please see
the help for that (haven't used it myself yet).
Remark for Allin and Jack:
BTW, I think the error message is strange insofar as IMO the parser
should complain already about the "--" in there, not about the
"drop"
word, no? But perhaps this has been changed since last release.
The "--" is in principle OK if interpreted as "minus minus",
as in "y = f(x) --a".
Allin
2:57 p.m.
Am 14.03.2015 um 15:15 schrieb Allin Cottrell:
On Sat, 14 Mar 2015, Sven Schreiber wrote:
>>> list X=dummify(Z5) --drop-first
>> "
>
> Remark for Allin and Jack:
> BTW, I think the error message is strange insofar as IMO the parser
> should complain already about the "--" in there, not about the
"drop"
> word, no? But perhaps this has been changed since last release.
The "--" is in principle OK if interpreted as "minus minus", as in
"y =
f(x) --a".
Right. So if by coincidence "drop" and "first" were both existing
scalars (or even series?) then no error would be issued and the
expression would be read as:
list X = dummify(Z5) + drop - first
Because "drop" and "first" are not reserved words AFAICS. Maybe
I'm
being paranoid, but somehow this makes me nervous...
cheers,
sven
2:18 p.m.
On Sat, 14 Mar 2015, Qi Shi wrote:
dear everyone,
when i write in gretl the scripts
"
open greene22_2
discrete Z5
list X=dummify(Z5) --drop-first
"
then I run the program and get the results,
[...]
? list X=dummify(Z5) --drop-first
> list X=dummify(Z5) --drop-
The symbol 'drop' is undefined
Error executing script: halting
> list X=dummify(Z5) --drop-first
"
why did i encounter the error?
Because you're using an option, which goes with the "dummify" command,
together with the _function_ called "dummify". In fact, it is confusing.
If it weren't for backwards compatibility, there would be no reason to
keep the command IMO.
-------------------------------------------------------
Riccardo (Jack) Lucchetti
Dipartimento di Scienze Economiche e Sociali (DiSES)
Università Politecnica delle Marche
(formerly known as Università di Ancona)
r.lucchetti(a)univpm.it
http://www2.econ.univpm.it/servizi/hpp/lucchetti
-------------------------------------------------------
3634
days inactive
3634
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4 comments
4 participants
participants (4)
-
Allin Cottrell -
Qi Shi -
Riccardo (Jack) Lucchetti -
Sven Schreiber