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Re: Gradient of a List

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82565] Re: Gradient of a List
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Thu, 25 Oct 2007 06:00:55 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <ffn0uv$60k$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

interpolate the data ? and build the gradient of the interpolation.

Regards
   Jens

olalla wrote:
> Hi everybody,
> 
> Does anybody know how can I get the "gradient" of a list of points?
> 
> My real problem is:
> 
> I have a scalar field previously obtained numerically that for a  
> given point (xi,yi) takes a value f(xi,yi). What I want to do is an  
> estimation of the gradient of this scalar field BUT I haven't got any  
> analytical function that expresses  my field so I can't use the Grad  
> function.
> 
> How can I solve this using Mathematica?
> 
> Thanks in advance
> 
> Olalla, Bilbao UPV/EHU
> 


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