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Re: "Correct" Data Philosophy [message #69361 is a reply to message #69092]

Wed, 30 December 2009 14:14

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Kenneth P. Bowman writes:

> You can download the interpolation chapter from my book here
>
> http://csrp.tamu.edu/pdf/idl/sample_chapter.pdf
>
> I also made a sample program that shows how to fit sines and
> cosines using least-squares (REGRESS in this case).
>
> http://csrp.tamu.edu/downloads/fft_vs_least_squares.pro.zip
>
> Most of the program is concerned with printing and plotting. The
> actual calculations don't take much space.

Ken, I have been studying this example and the last two
chapters in your book much of the day. I have to say, this
is probably the first time in my life that I have a practical
understanding of what the FFT actually does! And from your
examples, it even seems obvious to me what FFT filtering
is all about.

Thanks very much for providing this information. :-)

Have a Happy New Year!

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		"Correct" Data Philosophy By: David Fanning on Thu, 17 December 2009 08:43
		Re: "Correct" Data Philosophy By: David Fanning on Tue, 22 December 2009 12:01
		Re: "Correct" Data Philosophy By: Kenneth P. Bowman on Tue, 22 December 2009 11:02
		Re: "Correct" Data Philosophy By: jkj on Tue, 22 December 2009 09:54
		Re: "Correct" Data Philosophy By: Kenneth P. Bowman on Mon, 21 December 2009 14:03
		Re: "Correct" Data Philosophy By: David Fanning on Wed, 30 December 2009 14:14
		Re: "Correct" Data Philosophy By: fburton on Mon, 21 December 2009 11:08
		Re: "Correct" Data Philosophy By: Laura on Mon, 21 December 2009 09:19
		Re: "Correct" Data Philosophy By: Kenneth P. Bowman on Sun, 20 December 2009 08:57
		Re: "Correct" Data Philosophy By: fburton on Sun, 20 December 2009 06:57
		Re: "Correct" Data Philosophy By: R.G.Stockwell on Sat, 19 December 2009 06:52
		Re: "Correct" Data Philosophy By: David Fanning on Fri, 18 December 2009 12:22
		Re: "Correct" Data Philosophy By: Paul Van Delst[1] on Fri, 18 December 2009 10:03
		Re: "Correct" Data Philosophy By: Laura on Fri, 18 December 2009 08:44
		Re: "Correct" Data Philosophy By: H. Evans on Fri, 18 December 2009 07:31
		Re: "Correct" Data Philosophy By: lecacheux.alain on Fri, 18 December 2009 01:35
		Re: "Correct" Data Philosophy By: d.poreh on Fri, 18 December 2009 01:14
		Re: "Correct" Data Philosophy By: David Fanning on Thu, 17 December 2009 15:36
		Re: "Correct" Data Philosophy By: Kenneth P. Bowman on Thu, 17 December 2009 15:03
		Re: "Correct" Data Philosophy By: David Fanning on Thu, 17 December 2009 14:58
		Re: "Correct" Data Philosophy By: Giorgio on Thu, 17 December 2009 14:31
		Re: "Correct" Data Philosophy By: David Fanning on Thu, 17 December 2009 13:56
		Re: "Correct" Data Philosophy By: rogass on Thu, 17 December 2009 13:41
		Re: "Correct" Data Philosophy By: Kenneth P. Bowman on Thu, 17 December 2009 13:23
		Re: "Correct" Data Philosophy By: Laura on Thu, 17 December 2009 12:33
		Re: "Correct" Data Philosophy By: David Fanning on Thu, 31 December 2009 08:10
		Re: "Correct" Data Philosophy By: Kenneth P. Bowman on Thu, 31 December 2009 07:18
		Re: "Correct" Data Philosophy By: David Fanning on Tue, 29 December 2009 11:43

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