Displaying 3 results from an estimated 3 matches for "tsdisagg".
2017 Sep 02
1
Precision error in time index of ts objects
Thanks for the very detailed explanation.
I did not create the series using structure(), that was the result of
dump() on an intermediate object created within tsdisagg::ta(), which is
where I found the error in the first place. ta() indeed manipulates .Tsp
directly, rather than using ts. I guess this is a bug in tsdisagg then.
Thanks!
--
Andrea Altomani
On Sat, Sep 2, 2017 at 12:31 AM Achim Zeileis <Achim.Zeileis at uibk.ac.at>
wrote:
> On Fri, 1...
2017 Sep 01
0
Precision error in time index of ts objects
On Fri, 1 Sep 2017, Andrea Altomani wrote:
> I should have formulated my question in a more specific way.
>
> 1. I suspect this is a floating point precision issue. I am not very
> knowledgeable about R internals, can someone else confirm it?
Yes. If you represent a series with increment 1/12 it depends on how you
do it. As a simple example consider the following two descriptions
2017 Sep 01
2
Precision error in time index of ts objects
I should have formulated my question in a more specific way.
1. I suspect this is a floating point precision issue. I am not very
knowledgeable about R internals, can someone else confirm it?
2. Should this be considered a bug or not, because it is "just a precision
issue"? Should I report it?
3. How can it happen? From a quick review of ts.R, it looks like the values
of the time