Re: [ferret_users] Whether Spline interpolation is possible in ferret ?

Hi Dona,

If you were using PyFerret, and comfortable working in Python, you could make use of the interpolate module in SciPy (scipy.interpolate) to perform 1D and 2D spline interpolation. (see: http://docs.scipy.org/doc/scipy/reference/tutorial/interpolate.html#spline-interpolation )

If you were doing this just once, or very rarely, you could pull the data from Ferret (PyFerret) into a NumPy array using pyferret.getdata, and then push the interpolated values into Ferret under a new variable name using pyferret.putdata.

If this was something you wanted more often, it would be worth the effort to create a Ferret external function written in Python and make it visible in Ferret using the Ferret command (in PyFerret) "DEFINE PYFUNCTION".

Karl

On Sat, Apr 13, 2013 at 6:52 AM, Don DNA <don_vbe@xxxxxxxxx> wrote:

Hi ! Experts

whether ferret has any function for spline interpolation like Matlab ? or any other provision do the same ?

I would like change temperature profile bin size using Spline interpolation in fact I just want to learn it in ferret.

I understood linear interpolation in ferret, and I could able to change bin size(10 meter to 1 meter) for attached data file using linear interpolation.

Those who know spline interpolation in ferret, kindly help on this topic.

- Dona Clara

--
Karl M. Smith, Ph.D.
JISAO Univ. Wash. and TMAP/PMEL NOAA
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