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Re: Discrete Fourier Transform (DFT) viewer and/or file format




On Sun, Nov 12, 2017 at 07:45:13PM -0800, Dan Hitt wrote:
> I have some DFTs that i wish to inspect.  (Apparently DFT is a common
> acronym, but here i mean Discrete Fourier Transform.  And properly
> speaking it doesn't make sense to inspect a transform, but only to
> inspect transformed data, but i'm speaking colloquially.)
> 
> DFTs are a common artifact in digital signal processing.  Lots of
> Debian packages are focused on FFTs (Fast Fourier Transforms, a way of
> computing DFTs).  Nevertheless i couldn't find either a standard file
> format to store one, or software specifically for viewing DFTs.
> 
> Of course, lots of software can take data, then transform it, then
> display the transform that it created, but i would like something that
> can take an already created DFT in some standard format, then display
> it.
> 
> TIA for any information or pointers or advice from anybody! :)
> 
> dan
> 

First things first: there is no special format for FT data.
Since mostly you deal with time series/sequential data any format should work.


To display that data any plotting program will do. 
gnuplot,
mathplot...

If you look for a easy integration into your transformation routines, I
suggest numpy/scipy which uses mathplot.

-H

-- 
Henning Follmann           | hfollmann@xxxxxxxxxxxxxxx