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Re: Making array out of sinc [message #72260]

Fri, 27 August 2010 04:32

Wout De Nolf
Messages: 194
Registered: October 2008

Senior Member

On Fri, 27 Aug 2010 04:00:40 -0700 (PDT), sirvival
<fpfeifer@hs.uni-hamburg.de> wrote:

> I want something that looks like when raindrop hits water.
> So when I do a contour plot it looks like elipsis.
> How can I do this?

nx=201
ny=81
ratio=1.
x=rebin(findgen(nx)-nx/2,nx,ny,/sample)
y=rebin(findgen(1,ny)-ny/2,nx,ny,/sample)*ratio
r=sqrt(x*x+y*y)
psf3=sin(r)/r

This gives circles as contours. Change the "ratio" to make ellipses.
Btw, this is not a 2D sinc function. That would be sin(x)sin(y)/xy.

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[Message index]

		Re: Making array out of sinc By: Wout De Nolf on Fri, 27 August 2010 04:32
		Re: Making array out of sinc By: Maxwell Peck on Fri, 27 August 2010 04:23
		Re: Making array out of sinc By: sirvival on Sat, 28 August 2010 04:42

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