[Gretl-users] Re: Problem when using a list
On Thu, May 2, 2024 at 7:37 AM Riccardo (Jack) Lucchetti
<p002264(a)staff.univpm.it> wrote:
On 02/05/2024 13:16, Sven Schreiber wrote:
> Am 02.05.2024 um 12:53 schrieb Riccardo (Jack) Lucchetti:
>> On 02/05/2024 11:57, Sven Schreiber wrote:
>>
>>> Well, I thought so, too. However, even inside a function there seems
>>> to be a problem. Test case: [...]
>>
>> I managed to track down the problem somehow. It looks as if operator
>> precedence might be the issue:
> Well, that's what Rigoberto said at the beginning, didn't he ? :-)
I've come to think that this is indeed the case: I had misunderstood the
actual meaning of Rigoberto's message.
Yes. The parser is getting confused by the <list>.<series_id>(<lag>)
formulation and is in effect parenthesizing
L.$i / L.$i(-1) - 1 # should be implicitly (L.$i / L.$i(-1)) - 1
as if it were
L.$i / (L.$i(-1) - 1)
In general, of course, '/' has higher precedence than '-' but it looks
like the right paren in "(-1)" is being taken as closing the division
expression.
Allin