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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...
7 mois il y a
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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...
7 mois il y a
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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...
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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] ...
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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...
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Getting logical indexes
This is a basic MATLAB operation. It is for instructional purposes. --- Logical indexing works like this. thresh = 4...
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Isprime optimus [FAST]
Primality test using isprime Matlab(r) stock function, but ~60% faster. Based on Nicolas Douillet 'Christmas eve prime squares e...
7 mois il y a | 1 téléchargement |
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alGolbach
Algorithm to compute and list every Goldbach couples of prime numbers which sum equals the given -even- input
7 mois il y a | 1 téléchargement |
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Prime numbers spirals
Functions to display prime numbers spiral and prime squares spiral. Also check primes sum and prime squares spiral length.
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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...
7 mois il y a | 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 ...
7 mois il y a | 5 réponses | 0
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Sample triangle (2D, 3D, ND)
Function to generate a triangular sampling grid of a given triangle
11 mois il y a | 2 téléchargements |
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Projective geometry demo
A "pedagogic" demo of projective geometry showing some mathematical objects projections
11 mois il y a | 2 téléchargements |
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Mesh ovoid
Function to compute, display, and save a meshed ovoid
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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...
11 mois il y a | 0
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Apollonian gaskets
Function to compute and display the apollonian gasket of any 3D triangle or 3D regular polygon
11 mois il y a | 1 téléchargement |
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chat with HAL9000 !
chat with HAL9000 and try to survive it ! ^_^
11 mois il y a | 2 téléchargements |
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Meshed Reuleaux tetrahedron
Function to compute, display, and save a meshed Reuleaux tetrahedron
11 mois il y a | 1 téléchargement |
Question
Apparent distance conservation in Matlab plot window while rotating 3D objects
Hey, When you plot a 3D object in Matlab and turn it around the apparent distance to this object will change, even if you set...
12 mois il y a | 2 réponses | 0
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Regular polyhedron inscribed sphere
Function to compute and display the inscribed sphere of a regular polyhedron.
environ un an il y a | 1 téléchargement |
Rendering problem with surf and trisurf
Any clue ? Thank you.
environ un an il y a | 0
Question
Rendering problem with surf and trisurf
Hey, When I use surf or trisurf functions to plot a 3D plane made of several ploygons (triangles or squares for instance), I ...
environ un an il y a | 1 réponse | 0
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isinside2Dset
Function to check if a vertex is located inside or outside a given 2D set.
plus d'un an il y a | 1 téléchargement |
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Jerusalem cube
Function to compute, display, and save the Jerusalem cube at any iteration. Help, doc, and examples included.
plus d'un an il y a | 1 téléchargement |
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Sierpinski ball
Function to compute, display, and save the Sierpinski ball (fractal sponge) based on the regular octahedron
plus d'un an il y a | 1 téléchargement |
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generate number in particular way
A = [1 5 2 7]; MAX = 10; generate a array Y = [1 2 2 2 2 2 3 3 4 4]; i.e. total eleme...
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Find the sum of the elements in the "second" diagonal
Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.
plus d'un an il y a
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3D printable Christmas star
Function to compute, display and save a 3D printable Christmas star.
plus d'un an il y a | 1 téléchargement |
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3D printable Koch snowflake
Function to compute, display, and save the triangular base 3D Koch snowflake at any iteration. Help, doc, examples included.
plus d'un an il y a | 2 téléchargements |
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Cube base 3D Koch snowflake
Function to compute, display, and save the cube base Koch snowflake, at any iteration. 3D printable ready option. Help, doc, exa...
plus d'un an il y a | 4 téléchargements |
