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Marios Karaoulis

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Company/University
Aristotle University of Thessaloniki

Personal Profile:

Geophysical Laboratory.
Inversion theory.
Time-lapse inversion.
4D Inversion.
Finite Element Theory.
FEM
Mesh

Professional Interests:

 

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Comments and Ratings by Marios View all
Updated File Comments Rating
14 Mar 2012 Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs. Author: Andrew Knyazev

Thanks for the reply Andrew, you are right.

11 Mar 2012 Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs. Author: Andrew Knyazev

Hi, useful add on, but one question.
Let's say we have a 3x3 grid, then why all the element on the diagonal are 4? Should be something like this
[2 -1 0 -1 0 0 0 0 0
-1 3 -1 0 -1 0 0 0
0 -1 2 0 0 -1 0 0 0 ....

...]

Only line 5 should have 4 on it's diagonal.

13 Jan 2011 Accurate Fast Marching Multistencils second order Fast Marching 2D and 3D including rk4 shortest path and skeletonize Author: Dirk-Jan Kroon

Can you provide the m files of the c code? Some of us do not have matlab compiler.

20 Oct 2010 Legendre Laguerre and Hermite - Gauss Quadrature Nodes and weights for Legendre Laguerre and Hermite - Gauss Quadrature Author: Geert Van Damme

One addition I did is this

% Linear map from[-1,1] to [a,b]
x=(a*(1-x)+b*(1+x))/2;
w=(b-a).*w/2;

a and b are user provided, and I think now that you can shift from [1 1] to [a b]

20 Oct 2010 Legendre Laguerre and Hermite - Gauss Quadrature Nodes and weights for Legendre Laguerre and Hermite - Gauss Quadrature Author: Geert Van Damme

Very useful program.

How can I calculate the GaussLegendre in the [0 1] space?

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