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Romain W

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Professional Interests:: CFD

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Comments and Ratings by Romain		View all 1 - 5 of 10
Updated	File	Comments	Rating
14 Mar 2013	Multiple matrix multiplications, with array expansion enabled Multiplying matrices, vectors, or scalars contained in two N-D arrays, with array expansion enabled. Author: Paolo de Leva	Hi Paolo, I was wondering if it is possible without using a for-loop to multiply each row of a matrix by another matrix using multiprod in a vectorised way. In my case: A [55000,3] and B [55000,3] and I want each row A [1,3] * B'[3,55000]? And I want something like: t=1:55000 multiprod(A(t,:),B) Very good job for this function! Cheers
10 Jan 2013	TriStream Compute streamlines on triangular mesh Author: Matthew Wolinsky	Hello Matthew, I was wondering how hard would it be to adapt this to 3D triangular mesh?
19 Nov 2012	vtkpipe Pipe visualization data to vtk files. Author: LeFlaux	Hi, is it possible to actually generate the streamlines from the glyphs, once exported to paraFoam?
19 Nov 2012	vtkpipe Pipe visualization data to vtk files. Author: LeFlaux
19 Nov 2012	Write Cell Array of Structs into a VTK Structured Grid Takes a 3D cell array with (nested) structs and exports it as a VTK structured grid. Author: Daniel Hornung	Hi Daniel, would it be possible to have more details about the input?

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Type	Description
File	Polygon_Intersection
File	Patch Normals

Files Matching Romain's Watch List					View all 1 - 2 of 2
Updated		File	Tags	Downloads (last 30 days)	Comments	Rating
19 Jun 2009		Polygon_Intersection This function computes n-times intersection region of shapes collection Author: Guillaume JACQUENOT	intersection, overlap, specialized, plotting, polygon, graphics	35	5	5.0 5.0 \| 6 ratings
02 Jun 2009		Patch Normals Calculates the normal vectors of a triangulated mesh (patch) Author: Dirk-Jan Kroon	faces, vertexnormals, patch, normal vector, normals, vertices	19	4	5.0 5.0 \| 2 ratings

Comments and Ratings Matching Romain's Watch List			1-5 of 13
Date	File	Comment by	Comments	Rating
22 Jan 2013	Polygon_Intersection This function computes n-times intersection region of shapes collection	John Mahoney	Hi all, I am interested in coloring the regions formed by a single self-intersecting polygon. I was hoping that this would do it %% clear S S(1).P.x = [0,5,5,2,2,4,4,1,1,3,3,0]; S(1).P.y = [0,0,5,5,2,2,1,1,3,3,4,4]; S(1).P.hole = 0; Display_result = 1; Accuracy = 1e-6; Polygons_intersection(S,Display_result,Accuracy); %% However, using this function the region that is double-covered is not colored. Can the author (or anyone else) recommend an algorithm to accomplish a single coloring of all regions of N-covering? Cheers, John	Comment only
15 Aug 2012	Polygon_Intersection This function computes n-times intersection region of shapes collection	jan		5
13 Mar 2012	Polygon_Intersection This function computes n-times intersection region of shapes collection	Romain W	I have to compute intersections between thousands of 2D triangles and "Polygons_intersection" takes an infinite amount of time to perform the task,I was wondering if there would be a way to improve greatly the computational time of the algorithm? Thanks a lot since I really need that function working at enhanced speed.	Comment only
06 Mar 2012	Polygon_Intersection This function computes n-times intersection region of shapes collection	Romain W	Hi everyone, As mentioned by m4 Chrennikov, I've faced similar problems when using Polygon_intersection function. It seems like in some cases, the function do not work properly, it returns structure with zeros areas (All P-s in each struct are empty []). Can you please let me know how to fix this problem? Thank you very much -------------------------------------------- I solved my problem by playing with the relative accuracy of the algorithm, thank you again for this fantastic function.	Comment only
06 Mar 2012	Polygon_Intersection This function computes n-times intersection region of shapes collection	Romain W	Hi everyone, As mentioned by m4 Chrennikov, I've faced similar problems when using Polygon_intersection function. It seems like in some cases, the function do not work properly, it returns structure with zeros areas (All P-s in each struct are empty []). Can you please let me know how to fix this problem? Thank you very much	5