Re: Spherical Harmonic xform

Good Afternoon

I am using a python module written by Jeff Whitaker from NOAA/ESRL/PSD.
I seems to work well. You can find it at:
http://www.cdc.noaa.gov/people/jeffrey.s.whitaker/python/spharm/html/public/spharm.spharm-module.html

Hope this helps.

Wendi Madsen

Fred Clare wrote:
>
> 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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