Nicolas Douillet
PhD, INRIA and CNRS alumni
Followers: 0 Following: 0
Interested in computational geometry, image processing, 3D reconstruction, geometry, mesh processing, mesh generation, number theory, fractals.
MATLAB
Spoken Languages:
English, French
Estadísticas
16 Preguntas
14 Respuestas
79 Archivos
Cody10 Problemas
158 Soluciones
CLASIFICACIÓN
8.285
of 289.695
REPUTACIÓN
5
CONTRIBUCIONES
16 Preguntas
14 Respuestas
ACEPTACIÓN DE RESPUESTAS
75.0%
VOTOS RECIBIDOS
5
CLASIFICACIÓN
1.439 of 19.581
REPUTACIÓN
1.265
EVALUACIÓN MEDIA
5.00
CONTRIBUCIONES
79 Archivos
DESCARGAS
250
ALL TIME DESCARGAS
8629
CLASIFICACIÓN
848
of 144.069
CONTRIBUCIONES
10 Problemas
158 Soluciones
PUNTUACIÓN
2.282
NÚMERO DE INSIGNIAS
14
CONTRIBUCIONES
0 Publicaciones
CONTRIBUCIONES
0 Público Canales
EVALUACIÓN MEDIA
CONTRIBUCIONES
0 Temas destacados
MEDIA DE ME GUSTA
Feeds
Enviada
Geoid
Function to compute, display, and save a icosahedron based geoid at any iteration (vertices + triangles)
9 días hace | 3 descargas |
Enviada
Platonic solids
Function to compute, display, and save the five platonic solids. Also mesh them with triangles or other polygons (square, pentag...
9 días hace | 9 descargas |
Enviada
Simplex convergence animation
Simplex algorithm convergence animation demo on Matlab 'peaks' test surface
13 días hace | 5 descargas |
Enviada
Any rotation (3D, 2D)
Function to rotate a -array of- vector(s) around any given -shifted- axis, in 2D or 3D space.
3 meses hace | 3 descargas |
Resuelto
Construct an index vector from two input vectors in vectorized fashion
Create an index vector defined by two input vectors, one defining the beginnings of one or more index ranges, and the other defi...
4 meses hace
Resuelto
Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...
4 meses hace
Resuelto
"Low : High - Low : High - Turn around " -- Create a subindices vector
Let two vectors *lo* and *hi* be given. The job is to create a index vector like so idx = [lo(1):hi(1) lo(2):hi(2) ...]...
4 meses hace
Resuelto
Matrix indexing with two vectors of indices
Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).
4 meses hace
Resuelto
Sum My Indices
Given inputs M and N (in that order), output an MxN matrix whose entries are equal to the sum of their indices. Example input...
4 meses hace
Resuelto
Getting the indices from a matrix
Inspired by Problem 645. Getting the indices from a matrix. Given a matrix A (or a vector), return the indices (always in row...
4 meses hace
Resuelto
First non-zero element in each column
For a given matrix, calculate the index of the first non-zero element in each column. Assuming a column with all elements zero i...
4 meses hace
Resuelto
Replicate elements in vectors
Replicate each element of a row vector (with NaN) a constant number of times. Examples n=2, A=[1 2 3] -> [1 1 2 2 3 3] ...
4 meses hace
Resuelto
Set the array elements whose value is 13 to 0
Input A either an array or a vector (which can be empty) Output B will be the same size as A . All elements of A equal to 13...
4 meses hace
Resuelto
Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...
4 meses hace
Enviada
Isprime optimus [FAST]
Primality test using isprime Matlab(r) stock function, but ~60% faster. Based on Nicolas Douillet 'Christmas eve prime squares e...
4 meses hace | 7 descargas |
Enviada
alGolbach
Algorithm to compute and list every Goldbach couples of prime numbers which sum equals the given -even- input
4 meses hace | 1 descarga |
Enviada
Prime numbers spirals
Functions to display prime numbers spiral and prime squares spiral. Also check primes sum and prime squares spiral length.
4 meses hace | 4 descargas |
Quickest way for alternate indexing a vector
Thank you all for your interest and answers :-) I am going to test them, pick the best in my case, and then choose for the co...
4 meses hace | 0
Pregunta
Quickest way for alternate indexing a vector
Hey, I am looking for the quickest way to create a vector like this : u = [5 7 11 13 17 19 23 25 ...
4 meses hace | 5 respuestas | 0
5
respuestasEnviada
Sample triangle (2D, 3D, ND)
Function to generate a triangular sampling grid of a given triangle
8 meses hace | 1 descarga |
Enviada
Projective geometry demo
A "pedagogic" demo of projective geometry showing some mathematical objects projections
8 meses hace | 2 descargas |
Enviada
Mesh ovoid
Function to compute, display, and save a meshed ovoid
8 meses hace | 2 descargas |
Apparent distance conservation in Matlab plot window while rotating 3D objects
Ok I realized I have to be even clearer. I am going to eplore the camera toolbar possibilities -which I didn't really know unti...
8 meses hace | 0
Enviada
Apollonian gaskets
Function to compute and display the apollonian gasket of any 3D triangle or 3D regular polygon
8 meses hace | 3 descargas |
Enviada
Lines intersection (2D, 3D) [FAST]
A function to compute the intersection point between two lines of the space (3D or 2D)
8 meses hace | 3 descargas |
Enviada
Triangle incircle (2D, 3D) [FAST]
Computes and display the incircle coordinates, the centre and the radius of one given 2D or 3D triangle
8 meses hace | 1 descarga |