26 total contributions since 2006

Associate research scientist at CU / NASA-GISS working on unstructured meshing algorithms and unstructured finite-volume/difference methods for ocean modelling.

Submitted

JIGSAW(GEO): Grid-generation for geophysical modelling

JIGSAW(GEO) is an unstructured grid-generator for geophysical modelling.

8 days ago | 12 downloads |

Submitted

MESH2D - Delaunay-based unstructured mesh-generation

MESH2D is a Delaunay-based mesh-generator for two-dimensional geometries.

8 days ago | 122 downloads |

Submitted

AABBTREE - A d-dimensional bounding-box tree.

A d-dimensional bounding-box tree for collections of objects.

10 days ago | 5 downloads |

Submitted

FINDTRIA - Point-in-Simplex queries in d-dimensions.

Spatial queries for collections of triangles, tetrahedrons and general d-simplexes.

10 days ago | 5 downloads |

Question

Redirecting stdout via system(…,'-echo')

I often call computationally intensive command-line programs from within MATLAB using the system command: [status, result] ...

10 months ago | 1 answer | 0

Submitted

JIGSAW: An unstructured mesh generator

JIGSAW is a Delaunay-based unstructured mesh generator for two- and three-dimensional geometries.

1 year ago | 13 downloads |

Submitted

DUALMESH - Polygonal mesh construction.

Construct polygonal "dual" meshes from 2-simplex triangulations embedded in R^3.

2 years ago | 16 downloads |

Responded

Re: mesh on a triangle

There are probably heaps of ways to get MATLAB to do this, one way is to construct a mesh of the triangular domain. You could us...

9 years ago | 5491 views

Responded

Re: contour line triangulation

Have you tried the mesh2d routines on the FEX? You should be able to triangulate the polygons defined by the contour lines... D...

9 years ago | 7062 views

Responded

Re: Mesh2D V23

Ok, so you want the whole circle, but split into 2 faces: r1 = 1.5; r2 = 3.2; n = 16; dA = 2.0*pi/n; A = (-pi:dA:(pi-dA))'; ...

9 years ago | 4170 views

Responded

Re: Mesh2D V23

Rui, Is this what you want? r1 = 1.5; r2 = 3.2; n = 16; dA = 2.0*pi/n; A = (-pi:dA:(pi-dA))'; n1 = [r1*cos(A), r1*sin(A)]; ...

9 years ago | 4170 views

Responded

Re: Mesh2D V23

Rui Silva" <el_tuka@iol.pt> wrote in message a "connectivity" need the if Hi Rui, As you have noted the general call to mesh2...

9 years ago | 4170 views

Responded

Re: finite difference

Rui Silva" <el_tuka@iol.pt> wrote in message <g40g6d$558 $1@fred.mathworks.com>... usually problem: x first mesh want mesh. help...

9 years ago | 3703 views

Responded

Re: Boundary Conditions

Rui Silva" <el_tuka@iol.pt> wrote in message what using and it This is a bit confusing. Mesh2d and distmesh2d both produce un...

9 years ago | 2862 views

Responded

Re: non-uniform mesh

Ozhan <aeroosso@hotmail.com> wrote in message perfect) 2D mesh in Matlab? Suppose we have a curve, which the formula of the equa...

9 years ago | 2695 views

Responded

Re: Speeding up GRIDDATA

Volker K" <klinkv.NOSPAM@yahoo.de> wrote in message Just out of interest, there's a function "tinterp" on the file exchange th...

9 years ago | 6326 views

Responded

Re: computational requirements for Delaunay

Steve <srjm72499@gmail.com> wrote in message seem to be bewteen O(n^1.5) Matlab (Qhull) is other than a Qhull should be using t...

9 years ago | 1399 views

Responded

Re: Modifying MEX arguments in place?

What about an iterative solver then, like something from the preconditioned conjugate gradient family. You only need to store th...

9 years ago | 11462 views

Responded

Re: PDETOOL

jonathan.ethier@gmail.com wrote in message various squares, export the workspace all manually do sizes (for using other let me ...

10 years ago | 1840 views

Submitted

Fast points-in-polygon test

Fast test to determine points located inside general polygon regions. Should be significantly faster

10 years ago | 44 downloads |

Responded

Re: about the convergence of conjugate gradient

yunzhi cheng" <sjtu_yh@yahoo.com> wrote in message The jacobi preconditioner will only contribute when the diagonal terms are n...

10 years ago | 17706 views

Responded

Re: about the convergence of conjugate gradient

yunzhi cheng" <sjtu_yh@yahoo.com> wrote in message CG methods will theoretically converge in a maximum of N iterations for an N...

10 years ago | 17706 views

Submitted

tinterp - an alternative to griddata

Linear and quadratic interpolation for scattered data

11 years ago | 12 downloads |

Submitted

Contours for triangular grids

Generate smooth contours for functions defined on unstructured triangular grids

11 years ago | 35 downloads |