Re: [ferret_users] Spatial FFT

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Steve,
I haven't had any reports of anyone putting together such functions, but 
it would be quite simple to extend the current suite of code to work on 
another dimension than time. I'd be happy to talk you through getting 
started if you want to tackle this. It would just be taking the function 
code and changing loops so they operate over X rather than T for 
instance, and getting yourself set up to compile external functions.

If you're interested, and if you want a hand, mail me back off-line from 
the Users Group.

Ansley

Stephen R. Guimond wrote:
> Hello Ferreters,
>  I saw a post on this topic from JimmyC awhile back but wanted to get 
> an update.  I am trying to compute FFT on a spatial domain, actually 
> in curvilinear coordinates to retrieve the wavenumber spectrum of my 
> data.  The current FFTA function only accepts a variable on a time 
> axis and not space.  Has anyone modified this?  I am also looking to 
> input a 2-D curvilinear grid.
>
> Thanks,
> Steve
>
> =======================================================
> Stephen R. Guimond
> Graduate Research Assistant
> Center for Ocean-Atmospheric Prediction Studies (COAPS)
> Tallahassee, FL 32304
> =======================================================
>
> ----------------------------------------------------------------

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Ansley Manke, NOAA/PMEL   ansley.b.manke@xxxxxxxx
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744