2:09 p.m.
Hi all,
Behavior of restrictions with patterns like "b[1, 1] + -2*b[2, 1] = 0" is
strange. In the following MWE, the restricted coefficients differ by exactly 1.0 when
restrictions are defined in the "bugged" way:
open greene13_1.gdt
# set up system
system name="Grunfeld"
equation I_GM const C_GM F_GM
equation I_WE const C_WE F_WE
end system
# restriction w/bug
restrict "Grunfeld"
b[1,1] + -1.0*b[2,1] = 0.0
end restrict
estimate "Grunfeld" method=sur --iterate
# restriction w/o bug
restrict "Grunfeld"
b[1,1] - 1.0*b[2,1] = 0.0
end restrict
estimate "Grunfeld" method=sur -iterate
This a bug or a feature? Thanks for looking into this.
Best,
Igor
Igor Pozdeev
+41786120928
www.igorpozdeev.me<http://www.igorpozdeev.me/>
2:33 p.m.
Am 22.02.2019 um 15:09 schrieb Pozdeev, Igor:
b[1,1] + -1.0*b[2,1] = 0.0
(And gretl responds with b[1,1] - b[2,1] = -1)
This a bug or a feature? Thanks for looking into this.
Pretty clearly a bug. It gets funnier when you add ++++ in place of the
+. And the error is undone when you write "... +- -1...".
thanks
sven
8:21 p.m.
On Fri, 22 Feb 2019, Sven Schreiber wrote:
Am 22.02.2019 um 15:09 schrieb Pozdeev, Igor:
>
> b[1,1] + -1.0*b[2,1] = 0.0
>
(And gretl responds with b[1,1] - b[2,1] = -1)
> This a bug or a feature? Thanks for looking into this.
Pretty clearly a bug. It gets funnier when you add ++++ in place of the +.
And the error is undone when you write "... +- -1...".
OK, now in git the fun's all over. It's a syntax error if a
restriction clause contains two consecutive operators (or just
separated by spaces).
Allin
1:15 p.m.
Am 22.02.2019 um 21:21 schrieb Allin Cottrell:
On Fri, 22 Feb 2019, Sven Schreiber wrote:
> Am 22.02.2019 um 15:09 schrieb Pozdeev, Igor:
> Pretty clearly a bug. It gets funnier when you add ++++ in place
of
> the +. And the error is undone when you write "... +- -1...".
OK, now in git the fun's all over. It's a syntax error if a restriction
clause contains two consecutive operators (or just separated by spaces).
Thanks. BTW, I noticed that using round brackets resulted in an error.
Is that intended / no longer the case? (I see that they wouldn't be
needed to express the restrictions.)
cheers
sven
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3 comments
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participants (3)
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Allin Cottrell -
Pozdeev, Igor -
Sven Schreiber