Rank: 1769 based on 38 downloads (last 30 days) and 2 files submitted

Bryan C. Smith

E-mail: smithb32@gmail.com
Company/University: University of Colorado Denver
Lat/Long: 39.747303, -104.99964

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Professional Interests:: derivative free optimization, numerical linear algebra, differential geometry, scientific computing

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Files Posted by Bryan C.					View all 1 - 2 of 2
Updated		File	Tags	Downloads (last 30 days)	Comments	Rating
17 Jun 2013		Plot2BMP Exports Matlab arrays into BMP images. Many options for color, can handle complex arrays. Author: Bryan C. Smith	plotting, visualization, complex maps, surface plot, data export, image processing	18	0
17 Jun 2013		Laplacian 2.0 (1-3)D sparse Laplacian matrices with eigenvalues and eigenvectors. Author: Bryan C. Smith	laplacian, eigenvalues, eigenvectors, finite element method, fem, finite difference	20	0

Top Tags Applied by Bryan C.	1 - 5 of 20
bitmap, bmp, complex maps, data export, eigenvalues

Files Tagged by Bryan C.					View all 1 - 2 of 2
Updated		File	Tags	Downloads (last 30 days)	Comments	Rating
17 Jun 2013		Plot2BMP Exports Matlab arrays into BMP images. Many options for color, can handle complex arrays. Author: Bryan C. Smith	plotting, visualization, complex maps, surface plot, data export, image processing	18	0
17 Jun 2013		Laplacian 2.0 (1-3)D sparse Laplacian matrices with eigenvalues and eigenvectors. Author: Bryan C. Smith	laplacian, eigenvalues, eigenvectors, finite element method, fem, finite difference	20	0

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Type	Description
File	Laplacian in 1D, 2D, or 3D
File	Laplacian 2.0
File	Plot2BMP

Files Matching Bryan C.'s Watch List					View all 1 - 3 of 3
Updated		File	Tags	Downloads (last 30 days)	Comments	Rating
17 Jun 2013		Plot2BMP Exports Matlab arrays into BMP images. Many options for color, can handle complex arrays. Author: Bryan C. Smith	plotting, visualization, complex maps, surface plot, data export, image processing	18	0
17 Jun 2013		Laplacian 2.0 (1-3)D sparse Laplacian matrices with eigenvalues and eigenvectors. Author: Bryan C. Smith	laplacian, eigenvalues, eigenvectors, finite element method, fem, finite difference	20	0
01 Aug 2011		Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs. Author: Andrew Knyazev	2d, 3d, laplacian, poisson, pde, boundary condition	36	4	5.0 5.0 \| 3 ratings

Comments and Ratings Matching Bryan C.'s Watch List			1-5 of 5
Date	File	Comment by	Comments	Rating
14 Mar 2012	Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs.	Marios Karaoulis	Thanks for the reply Andrew, you are right.	5
12 Mar 2012	Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs.	Andrew Knyazev	Re: Marios Karaoulis It depends on boundary conditions. Your example apparently uses Neumann boundary condition as is http://en.wikipedia.org/wiki/Laplacian_matrix#As_an_approximation_to_the_negative_continuous_Laplacian while the code default us the Dirichlet boundary conditions. To get your matrix, please use [~,~,A]=laplacian([3 3],{'NN' 'NN'}) full(A) shows what you want: 2 -1 0 -1 0 0 0 0 0 -1 3 -1 0 -1 0 0 0 0 0 -1 2 0 0 -1 0 0 0 -1 0 0 3 -1 0 -1 0 0 0 -1 0 -1 4 -1 0 -1 0 0 0 -1 0 -1 3 0 0 -1 0 0 0 -1 0 0 2 -1 0 0 0 0 0 -1 0 -1 3 -1 0 0 0 0 0 -1 0 -1 2	Comment only
11 Mar 2012	Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs.	Marios Karaoulis	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.	Comment only
12 Sep 2011	Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs.	Mr Smart		5
07 Nov 2010	Laplacian in 1D, 2D, or 3D Sparse (1-3)D Laplacian on a rectangular grid with exact eigenpairs.	Thomas Clark	This works extremely well, extremely flexibly and with no fuss. I'm SO upset I didn't find this earlier. I've basically coded an alternative, already, but it isn't close to being as good. Thank you very much!	5