[OpenWalnut] tensor line integration

[Sebastian Eichelbaum]

Hi Francisco

This kind of calculation is currently not possible in OpenWalnut. Sorry. You can probably use another tool like MathLab or the free Octave system for this kind of calculation. If you write the tracked lines in the correct format, you can view and browse them in OpenWalnut. If you have questions regarding the file-format, write an e-mail and we will help you with this.

Bye
Sebastian

On Thu, 30 Jun 2011, Francisco J. Beron-Vera wrote:

> Hi,
> 
> Let x denotes position on D \in R^2 and T(x) is a (symmetric)
> 2-tensor field on D. Then
> 
> (1) T(x) e(x) = \lambda(x) e(x)
> 
> where (e(x),\lambda(x)) is an eigenvector field/eigenvalue field
> pair. Then consider the ODE
> 
> (2) x'(s) = e(x(s)), x(0) = x_0,
> 
> where s is the natural parameterization (arclength).
> 
> I need to compute the integral curves of (1) - tensor lines. I have
> a table of numbers specifying the components of e on a regular
> lattice. How can do this computation using OpenWalnut?
> 
> Thank you in advance.
> 
> Francisco
> 
> -- 
> Francisco J. Beron-Vera
> RSMAS/AMP, U. Miami
> 4600 Rickenbacker Cswy.
> Miami, FL 33149 USA
> +1 (305) 421-4873
> +1 (305) 421-4701 (fax)
> fberon at rsmas.miami.edu
> www.rsmas.miami.edu/personal/fberon
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> 

-- 
Dipl.-Inf. Sebastian Eichelbaum
Universität Leipzig
Institut für Informatik
Abteilung Bild- und Signalverarbeitung
PF 100920
D-04009 Leipzig