Rank: 2182 based on 31 downloads (last 30 days) and 5 files submitted
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David Gingras

E-mail
Company/University
Canadian Space Agency

Personal Profile:
Professional Interests:
robotics, control and computer vision

 

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Files Posted by David View all
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  • 5
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
25 Nov 2009 Screenshot Remove Unconnected Triangle This function takes a triangular mesh and remove the unconnected cells. Author: David Gingras delaunay, triangulation, mesh, 3d, unrestricted triangul..., triangular mesh 4 1
  • 5.0
5.0 | 1 rating
19 Jun 2009 Screenshot Assign connectivity ID to 2D triangular mesh This function assigns an ID based on the connectivity for each cell of a 2D triangular mesh. Author: David Gingras mesh, triangulation, connectivity, triangular mesh, unrestricted triangul... 2 1
  • 5.0
5.0 | 1 rating
05 May 2009 Screenshot Compute normal vectors of 2.5D triangulation That function compute the normal vectors of a 2.5D triangulation. Author: David Gingras normal vector, delaunay, triangulation, 2d 9 3
  • 5.0
5.0 | 3 ratings
05 May 2009 Screenshot Export triangulation to Paraview Function to export an unrestricted 2D triangulation to a VTK file which can be open with Paraview. Author: David Gingras 2d, visualization, data export, 3d, triangulation, vtk 7 3
  • 5.0
5.0 | 1 rating
06 Jan 2009 Screenshot Export 3D line to Paraview Function to export a 3D line to a VTK format which can be open with Paraview. Author: David Gingras 3d, data export, visualization, vtk, paraview 9 1
Comments and Ratings by David View all
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  • 5
Updated File Comments Rating
22 Aug 2011 Export triangulation to Paraview Function to export an unrestricted 2D triangulation to a VTK file which can be open with Paraview. Author: David Gingras

Hi Luke, exportTriangulation2VTK.m just deals with 3D shell meshes (assembly of triangles not tetrahedra). If you do have a shell mesh and you are not able to export it to Paraview, you can send me your code and I'll see what I can do. Cheers. - David

21 Jul 2009 m-code to LaTeX converter This m-file (with GUI) converts m-code into a tex-file for including in a LaTeX-document. Author: Uwe Lelke

Very useful and it works at the first time! I got a small error with an equation with 2 transposes in the same line (e.g. : G=P*C'/(C*P*C'+R)). The parser has interpreted the code between both transposes (') as a string. But it's minor. Good job, thanks!
24 Jun 2009 ESTIMATION PROCESS USING NON LINEAR ENERGY OPERATOR ESTIMATION OF AM SIGNAL USING NLE Author: Tamal Das

Useful for understanding. Thanks! Suggestion : use vectorized operators for discrete derivatives instead of loop.
28 May 2009 Inhull Efficient test for points inside a convex hull in n dimensions Author: John D'Errico

Another very usefull code provided by John! Thanks.
25 Nov 2008 gridtrimesh Fits a square grid surface of the form z = f(x,y) to a triangular mesh surface. Author: Willie Brink

Very nice and fast!
This function takes care of non-convex surface with holes.
Good job!
Comments and Ratings on David's Files View all
  • 1 - 5 of
  • 9
Updated File Comment by Comments Rating
31 May 2012 Remove Unconnected Triangle This function takes a triangular mesh and remove the unconnected cells. Author: David Gingras Jaouen, Vincent

Very useful, thank you.
24 May 2012 Export triangulation to Paraview Function to export an unrestricted 2D triangulation to a VTK file which can be open with Paraview. Author: David Gingras Zhang, Zhijun

nice work, it works!
22 Aug 2011 Export triangulation to Paraview Function to export an unrestricted 2D triangulation to a VTK file which can be open with Paraview. Author: David Gingras Gingras, David

Hi Luke, exportTriangulation2VTK.m just deals with 3D shell meshes (assembly of triangles not tetrahedra). If you do have a shell mesh and you are not able to export it to Paraview, you can send me your code and I'll see what I can do. Cheers. - David

15 Aug 2011 Export triangulation to Paraview Function to export an unrestricted 2D triangulation to a VTK file which can be open with Paraview. Author: David Gingras Luke

David, I have a 3D point cloud that I am running through delaunay(x,y) on and this generates a nx3 matrix, n being the # of triangulations. I am using this to create a smooth surface in MATLAB that can accurately model the point cloud if it were a volume, not just points. When I load the VTK file into Paraview, the triangulations are not working well and Paraview makes the file look more like a surf plot rather than a triangulation. Any suggestions as to what I am doing wrong?
17 Apr 2011 Compute normal vectors of 2.5D triangulation That function compute the normal vectors of a 2.5D triangulation. Author: David Gingras ws

n=60;
[X Y] = meshgrid(1:n, 1:n);
[X Y Z] = peaks(n);
a = delaunay(X(:),Y(:));
A = [X(a(:,1)) Y(a(:,1)) Z(a(:,1))];
B = [X(a(:,2)) Y(a(:,2)) Z(a(:,2))];
C = [X(a(:,3)) Y(a(:,3)) Z(a(:,3))];
facets.C = (A+B+C)/3;
B = B-A;
C = C-A;
M = cross(B, C, 2);
L = sqrt(sum(M.^2,2)) + 10e-20;
facets.N = M./repmat(L,1,3);
facets.S = 0.5*L;
Top Tags Applied by David
  • 1 - 5 of
  • 13
triangulation, connectivity, data export, delaunay, mesh
Files Tagged by David View all
  • 1 - 5 of
  • 6
Updated   File Tags Downloads
(last 30 days) 		Comments Rating
25 Nov 2009 Screenshot Remove Unconnected Triangle This function takes a triangular mesh and remove the unconnected cells. Author: David Gingras delaunay, triangulation, mesh, 3d, unrestricted triangul..., triangular mesh 4 1
  • 5.0
5.0 | 1 rating
19 Jun 2009 Screenshot Assign connectivity ID to 2D triangular mesh This function assigns an ID based on the connectivity for each cell of a 2D triangular mesh. Author: David Gingras mesh, triangulation, connectivity, triangular mesh, unrestricted triangul... 2 1
  • 5.0
5.0 | 1 rating
05 May 2009 Screenshot Compute normal vectors of 2.5D triangulation That function compute the normal vectors of a 2.5D triangulation. Author: David Gingras normal vector, delaunay, triangulation, 2d 9 3
  • 5.0
5.0 | 3 ratings
05 May 2009 Screenshot Export triangulation to Paraview Function to export an unrestricted 2D triangulation to a VTK file which can be open with Paraview. Author: David Gingras 2d, visualization, data export, 3d, triangulation, vtk 7 3
  • 5.0
5.0 | 1 rating
06 Jan 2009 Screenshot Export 3D line to Paraview Function to export a 3D line to a VTK format which can be open with Paraview. Author: David Gingras 3d, data export, visualization, vtk, paraview 9 1

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