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Re: possible bug with center keyword option for FFT [message #75044 is a reply to message #75041]

Fri, 11 February 2011 10:17

astroboy2k
Messages: 34
Registered: July 2007

Member

On Feb 11, 1:05 pm, David Fanning <n...@dfanning.com> wrote:
> Mark writes:
>> I sent the following to ittvis support, but I was wondering if anyone
>> has an insights into this. Basically, setting the center keyword for
>> FFT() gives an output that is shifted incorrectly. I'm doing some
>> really perverse stuff where it's really important to be sure what
>> frequency(angle) an output element from FFT() corresponds to....
>
> I recall an earlier discussion here that this keyword
> might not be working correctly. I know I made a note in
> my book about this, and I normally save the reference,
> but I can't put my hands on it at the moment.
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.idlcoyote.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")

Thanks David.

I had a look on this group but apparently I missed that.... I hope the
work on the book is going well.

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[Message index]

		Re: possible bug with center keyword option for FFT By: R.G.Stockwell on Fri, 11 February 2011 12:41
		Re: possible bug with center keyword option for FFT By: R.G.Stockwell on Fri, 11 February 2011 12:34
		Re: possible bug with center keyword option for FFT By: astroboy2k on Fri, 11 February 2011 10:17
		Re: possible bug with center keyword option for FFT By: David Fanning on Fri, 11 February 2011 10:05
		Re: possible bug with center keyword option for FFT By: chris_torrence@NOSPAM on Tue, 15 February 2011 12:25

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