Re: spatial fft

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

Hi Jimmy,
Is your data 1-D in X?  If so you can send XSEQUENCE(var) into the FFT 
functions and that's it. If you want to set yourself to write and 
compile external functions, the code for all the FFT functions is 
available and it'd be a quick change to make the function operate on 
another axis.  See the Ferret external functions web page at

http://www.ferret.noaa.gov/Ferret/External_Functions/ferret_EF.html

where there are links to the source code for external functions.  You'd 
want the link for "internally linked external functions" about 3/4 of 
the way down the page.


jimmyc@iastate.edu wrote:

> Has anyone attempted to compute a spatial fast fourier transform in 
> ferret? In particular can I trick/modify the FFTA function to use the 
> spatial coordinate instead of the time coordinate for the calculation?
> Thanks for any insight