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MathGroup Archive 2007

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Re: Power Spectrum 2D field

  • To: mathgroup at smc.vnet.net
  • Subject: [mg78338] Re: Power Spectrum 2D field
  • From: dh <dh at metrohm.ch>
  • Date: Thu, 28 Jun 2007 06:27:53 -0400 (EDT)
  • References: <f5vqlc$inj$1@smc.vnet.net>


Hi Matteo,

please describe your problem more accurately.

A 2 dim (vector) field  over what manifold? What the power of your 

vector, magnitude squared?

Daniel



matteo.convertino at unipd.it wrote:

> Is there someone who can help me to calculate and plot the power spectrum

> of a 2D field?

> I have already calculated the power spectral density (it's a 3D function)

> of the matrix through the FFt of the same matrix, you can use various

> techniques, for example using the periodogram, but now i need the power

> spectrum of the field so...? How can i do?

> 

> (PS: for example in turbulence you give a 3D field and you can compute the

> power spectra, how? Therefore I am in the 2D input case)

> 

> Is there someone who have already done any Mathematica routine?

> 

> Thank you very much,

> 

> Matteo.

> 

> 

>      _______________________________________________________

>      Matteo Convertino

> 

>      PhD student, advisors: Prof. Andrea Rinaldo and Prof. Amos Maritan

>      IMAGE Dept. and International Center for Hydrology "Dino Tonini"

>      Via Loredan 20, I-35131 Padova

>      Graduate School in Civil and Environmental Engineering Sciences

>      University of Padova, Italy

> 

>      http://digilander.libero.it/matconv/

>      http://digilander.libero.it/matconv/ThesisMaterials.html

>      http://www.image.unipd.it/scuola_di_dottorato/

>      Office phone: +39 049 8275445

>      Fax: +39 049 8275446

>      Personal phone: +39 349 1750320

>      E-mail: convertino at idra.unipd.it and matteo.convertino at unipd.it

>      Skype ID: matteo_convertino

>      _______________________________________________________

> 

> 




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