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Nicolas Douillet


PhD, INRIA and CNRS alumni

Last seen: 28 days ago Active since 2017

Interested in computational geometry, image processing, 3D reconstruction, geometry, mesh processing, mesh generation, number theory, fractals.

Programming Languages:
MATLAB
Spoken Languages:
English, French

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Content Feed

Submitted


PI3MFT
Printable Iterative 3D Meshed Fractal Toolbox

1 month ago | 5 downloads |

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Submitted


Any rotation (3D, 2D)
Function to rotate a -array of- vector(s) around any given -shifted- axis, in 2D or 3D space.

1 month ago | 12 downloads |

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Submitted


Circular meshes
Sphere and torus circular meshes

2 months ago | 2 downloads |

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Solved


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...

2 months ago

Solved


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: ...

2 months ago

Solved


"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) ...]...

2 months ago

Solved


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)).

2 months ago

Solved


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...

2 months ago

Solved


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...

2 months ago

Solved


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...

2 months ago

Solved


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] ...

2 months ago

Solved


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...

2 months ago

Solved


Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...

2 months ago

Submitted


Isprime optimus [FAST]
Primality test using isprime Matlab(r) stock function, but ~60% faster. Based on Nicolas Douillet 'Christmas eve prime squares e...

2 months ago | 7 downloads |

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Submitted


alGolbach
Algorithm to compute and list every Goldbach couples of prime numbers which sum equals the given -even- input

2 months ago | 4 downloads |

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Submitted


Prime numbers spirals
Functions to display prime numbers spiral and prime squares spiral. Also check primes sum and prime squares spiral length.

2 months ago | 4 downloads |

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Answered
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...

2 months ago | 0

Question


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 ...

2 months ago | 5 answers | 0

5

answers

Submitted


Mesh generation toolbox
Some useful tools for mesh generation

5 months ago | 10 downloads |

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Submitted


mesh processing toolbox
Some useful tools for mesh processing

6 months ago | 21 downloads |

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Submitted


Sample triangle (2D, 3D, ND)
Function to generate a triangular sampling grid of a given triangle

6 months ago | 5 downloads |

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Submitted


Platonic solids
Function to compute and display the five platonic solids.

6 months ago | 1 download |

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Submitted


Projective geometry demo
A "pedagogic" demo of projective geometry showing some mathematical objects projections

6 months ago | 2 downloads |

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Submitted


Mesh ovoid
Function to compute, display, and save a meshed ovoid

6 months ago | 2 downloads |

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Answered
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...

7 months ago | 0

Submitted


Apollonian gaskets
Function to compute and display the apollonian gasket of any 3D triangle or 3D regular polygon

7 months ago | 3 downloads |

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Submitted


Lines intersection (2D, 3D) [FAST]
A function to compute the intersection point between two lines of the space (3D or 2D)

7 months ago | 2 downloads |

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Submitted


Triangle incircle (2D, 3D) [FAST]
Computes and display the incircle coordinates, the centre and the radius of one given 2D or 3D triangle

7 months ago | 1 download |

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Submitted


chat with HAL9000 !
chat with HAL9000 and try to survive it ! ^_^

7 months ago | 1 download |

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Submitted


Meshed Reuleaux tetrahedron
Function to compute, display, and save a meshed Reuleaux tetrahedron

7 months ago | 1 download |

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