Re: FLN interpolation

[Steve Hankin <hankin@xxxxxxxxxxxxx>]

Hi Gerard,

@FLN fills in gaps, regardless of the width of the gap, as long as it has a
valid data point on either side of the gap from which to interpolate. The
optional "n" parameter (see
http://ferret.wrc.noaa.gov/Ferret/Documentation/Users_Guide/v50/chapter3.html#FLN
transformation$linear interpolation) tells Ferret how far to read beyond the
edges of the requested region for valid data points from which to interpolate.

    - steve

======================================

Gerard Eldin wrote:

> Hi fereteers,
>
> There something I don't understand with the @FLN:n interpolation function.
> I have a gappy time series of temperatures that I want to interpolate, but
> without filling gaps larger than, say, 6 months. When I use @FLN:n, every
> gap, even 12 months long, is filled by linear interpolation, it doesn't
> seem to care what value of n I give.
>
> Could it be a bug ?
>
> Sincerely,
>
>       --------------------------------------------------
>        Dr. Gerard ELDIN,          Tel: 00 5 61 33 28 72
>        IRD, LEGOS/GRGS,           Fax: 00 5 61 25 32 05
>        18 Av. Edouard Belin,
>        31401 TOULOUSE CEDEX 4     Gerard.Eldin@cnes.fr
>        FRANCE                     or     eldin@ird.fr
>       --------------------------------------------------

--
Steve Hankin
NOAA/PMEL, 7600 Sand Point Way NE, Seattle, WA 98115-0070
ph. (206) 526-6080 -- FAX (206) 526-6744