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Yuji Zhang

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I'm a Ph.D. student working on nonlinear optics. I use Matlab to process experimental data and, the more complicated thing is, perform numerical simulation of light propagation based on partial differential equations.


 

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Updated File Comments Rating
06 Nov 2013 suplabel Places text as a title, xlabel, or ylabel on a group of subplots. Author: Ben Barrowes

Hi everyone~ I read the code again and found what was wrong... I should put in the argument [.08 .08 .5 .5]. When I changed in the function supAxes=[.08 .08 .5 .5] (line 46), it was overwritten (line 49-57). Thanks...

06 Nov 2013 suplabel Places text as a title, xlabel, or ylabel on a group of subplots. Author: Ben Barrowes

Hi, I changed the position by doing supAxes=[.08 .08 .5 .5];

but the title position does change...

Does anybody have the same thing or know what's going on? Any thoughts are appreciated. Thanks!

18 Jun 2013 GRABIT Extract (pick out) data points off image files. Author: Jiro Doke

Works so well! Thank you for your contribution Jiro~

Suggestion: automatic recognize curve (if possible)

13 May 2013 Why use fftshift(fft(fftshift(x))) in Matlab instead of fft(x)? Explain why we use fftshift(fft(fftshift(x))) in Matlab instead of fft(x) Author: Kan Wu

hi Kan,Shalin,

Thanks for the code and the discussion - nice and helpful.

A book I'm reading says it should be
fftshift(fft(fftshift(sig)))
and
ifftshift(ifft(ifftshift(spectrum)))

I'm confused. Could you explain where to use ifftshift when N=odd?

Thank you!
(The book is "Numerical Simulation of Optical Wave Propagation with examples in Matlab")

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