Nicolas Douillet
PhD, INRIA and CNRS alumni
Interested in computational geometry, image processing, 3D reconstruction, geometry, mesh processing, mesh generation, number theory, fractals.
Programming Languages:
MATLAB
Spoken Languages:
English, French
MATLAB
Spoken Languages:
English, French
Content Feed
已提交
Any rotation (3D, 2D)
Function to rotate a -array of- vector(s) around any given -shifted- axis, in 2D or 3D space.
2 months 前 | 2 次下载 |
已解决
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...
3 months 前
已解决
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: ...
3 months 前
已解决
"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) ...]...
3 months 前
已解决
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)).
3 months 前
已解决
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...
3 months 前
已解决
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...
3 months 前
已解决
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...
3 months 前
已解决
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] ...
3 months 前
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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...
3 months 前
已解决
Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...
3 months 前
已提交
Isprime optimus [FAST]
Primality test using isprime Matlab(r) stock function, but ~60% faster. Based on Nicolas Douillet 'Christmas eve prime squares e...
3 months 前 | 7 次下载 |
已提交
alGolbach
Algorithm to compute and list every Goldbach couples of prime numbers which sum equals the given -even- input
3 months 前 | 1 次下载 |
已提交
Prime numbers spirals
Functions to display prime numbers spiral and prime squares spiral. Also check primes sum and prime squares spiral length.
3 months 前 | 4 次下载 |
已回答
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...
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...
3 months 前 | 0
提问
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 ...
3 months 前 | 5 个回答 | 0
5
个回答已提交
Sample triangle (2D, 3D, ND)
Function to generate a triangular sampling grid of a given triangle
7 months 前 | 5 次下载 |
已提交
Projective geometry demo
A "pedagogic" demo of projective geometry showing some mathematical objects projections
7 months 前 | 2 次下载 |
已回答
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...
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 months 前 | 0
已提交
Apollonian gaskets
Function to compute and display the apollonian gasket of any 3D triangle or 3D regular polygon
8 months 前 | 3 次下载 |
已提交
Lines intersection (2D, 3D) [FAST]
A function to compute the intersection point between two lines of the space (3D or 2D)
8 months 前 | 3 次下载 |
已提交
Triangle incircle (2D, 3D) [FAST]
Computes and display the incircle coordinates, the centre and the radius of one given 2D or 3D triangle
8 months 前 | 1 次下载 |
已提交
Meshed Reuleaux tetrahedron
Function to compute, display, and save a meshed Reuleaux tetrahedron
8 months 前 | 1 次下载 |