It seems as if Gretl wants to fill in the gaps because it is a short series.!

On Mon, 22 Aug 2022 at 11:28, Sven Schreiber <> wrote:
Am 22.08.2022 um 12:16 schrieb Brian Revell:
> Hi Sven -the data are annual . 2018 2019 2020 2021 2022.    The fact
> that each year only contains the aggregated monthly data is irrelevant.
> As far as Gretl is concerned it is has been given 5 observations each
> recording the Jan-June total of trade.
> I have attached the file. You can ignore the log transforms on the
> variables.
> I suggest you highlight variables 1,2 and 3 , right click and request a
> time series plot.
> Hope this helps

Indeed it does, now I see what you mean. And actually, I can reproduce
the problem with a shipped dataset such as jgm-data.gdt if I restrict
the sample to only the first five observations (or less). Maybe no one
has noticed this before because it's not so common to plot short series.
But certainly looks like a bug.

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