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[ferret_users] Re: [ferret_users] fill_between accuracy



Le Mardi 21 Mars 2017 18.30 CET, "Ansley C. Manke" <ansley.b.manke@xxxxxxxx> a écrit:

> Hi Patrick,
>
> Another option for you would be the plot_swath.jnl script.  This defines
> polygon shapes from the points in the lines and so it should be
> perfectly accurate.
>
> -Ansley

Hi Ansley,

Thank you to point me the plot_swath.jnl script I didn't know.
My test to use it shows me that it does not solve my filling accuracy problem.

I think that the problem comes from the data itself. Because they are monthy
defined, you cannot expect to fill properly when the curve cross the
0 because this abscisse point where the curve cross the 0 is only
defined graphically, not from the data.
This is why, in my comprehension, I still need to refine the data to a finer
temporal grid (so from monthly to daily)

Attached a test made with the plot_swath.jnl script and the pdf produced
fill_between_ex3.pdf where the filling is not correct (graphically speaking).
To be compare to the fill_between_ex2.pdf

Produced by: pyferret -batch fill_between_ex3.pdf -script fill_between_ex3.jnl

Best regards
Patrick



>
>
> On 3/15/2017 9:28 AM, Patrick Brockmann wrote:
> > Hi ferreters,
> >
> > I am wondering if the accuracy of the filling could be improved
> > in the following script.
> > I should perhaps regrid to a finer time step but I am afraid to
> > complicate the script unnecessary.
> >
> > Best regards
> > Patrick
> >
>



--
Data Analysis and Visualization Engineer
LSCE/IPSL, CEA-CNRS-UVSQ laboratory
LSCE - Climate and Environment Sciences Laboratory
IPSL - Institut Pierre Simon Laplace
--

Attachment: fill_between_ex3.jnl
Description: Binary data

Attachment: fill_between_ex2.pdf
Description: Adobe PDF document

Attachment: fill_between_ex2.jnl
Description: Binary data

Attachment: fill_between_ex3.pdf
Description: Adobe PDF document


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