Re: Spherical Harmonic xform

On Jul 7, 2006, at 1:06 PM, James Boyle wrote:

> the ECMWF and NCEP grib files have data which are in spherical
> harmonics.
> On the ncl list Dennis Shea has pointed to an NCL call 'cc2g' that
> takes the harmonics data and puts it on a gaussian grid.
>
> Is this functionality available in PyNGL/pyNIO? - I am aware that
> there are packages to handle spherical harmonics in python but I
> feel that this particular application is in the purview of an I/O
> service of data which is very commonly accessed.

Hi Jim,

This functionality is currently not available in PyNGL/pyNIO. About the
best you could do at this point is take Dennis Shea's code he wrote
using
NCL (this in not an officially supported NCL function) and try
rewriting it
to interface to a Python SPHEREPACK binding.

We will put this on our list, but don't hold your breath.

Fred Clare

>
> --Jim
>
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Received on Fri Jul 07 2006 - 15:14:23 MDT