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Interplay of fft, ifft, fftshift, and ifftshift in MATLAB

24 Dec 2009 (Updated 11 May 2011)

This file clarifies assumptions about the position of origin in computation of DFT

File Information
Description	This script was used to publish a post by the same title: http://www.mshalin.com/blog/?p=467, where I tried to clarify the assumptions made in computation of DFT (by FFT algorithm). These assumptions have important consequences. This script takes the example of obtaining real and even Fourier/inverse Fourier transform from a real and even function.
MATLAB release	MATLAB 7.7 (R2008b)

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Everyone's Tags	fft, fftshift, ifft, ifftshift, optics, psf, pupil, real and even
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Updates
11 May 2011	I have moved my blog (that was linked in the description). I have updated a link to the blog.