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Adrien Leygue


CNRS / Ecole centrale Nantes

Last seen: Today Attivo dal 2011

Professional Interests: Complex Fluids, Material Science, Numerical Methods, Model Reduction

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  • 5-Star Galaxy Level 4
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  • Knowledgeable Level 1
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Domanda


Tensor creation like "pageTensorprod"?
I have two 3x3xN tensors (let's call them A and B) which I would like to combine into a 3x3x3x3xN tensor. More specifically I w...

11 mesi fa | 1 risposta | 0

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risposta

Domanda


writestruct does not reproduce the input of readstruct
I find it disturbing that applying writestruct on a structure created with readstruct does not reproduce the original input: see...

circa un anno fa | 1 risposta | 0

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risposta

Risolto


Return unique values without sorting
If the input vector A is [42 1 1], the output value B must be the unique values [42 1] The *values of B are in the s...

oltre 7 anni fa

Risolto


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)).

oltre 7 anni fa

Risolto


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

oltre 7 anni fa

Risolto


Return elements unique to either input
Given two numeric inputs a and b, return a row vector that contains the numbers found in only a or only b, but not both. For ex...

oltre 7 anni fa

Risolto


We love vectorized solutions. Problem 1 : remove the row average.
Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...

oltre 7 anni fa

Risolto


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...

oltre 7 anni fa

Risolto


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] n=0...

oltre 7 anni fa

Risolto


Find the largest value in the 3D matrix
Given a 3D matrix A, find the largest value. Example >> A = 1:9; >> A = reshape(A,[3 1 3]); >> islargest(A) a...

oltre 7 anni fa

Risolto


Check if number exists in vector
Return 1 if number _a_ exists in vector _b_ otherwise return 0. a = 3; b = [1,2,4]; Returns 0. a = 3; b = [1,...

oltre 7 anni fa

Inviato


Plane fit
Fits a plane to a set of data points by minimizing the normal quadratic distance

circa 9 anni fa | 28 download |

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Risolto


The Hitchhiker's Guide to MATLAB
Output logical "true" if the input is the answer to life, the universe and everything. Otherwise, output logical "false".

circa 12 anni fa

Risolto


Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

circa 12 anni fa

Risolto


Remove any row in which a NaN appears
Given the matrix A, return B in which all the rows that have one or more <http://www.mathworks.com/help/techdoc/ref/nan.html NaN...

circa 12 anni fa

Risolto


Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Example...

circa 12 anni fa

Risolto


Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

circa 12 anni fa

Risolto


Distance walked 2D
Suppose you go from x-y coordinates [3,4] to [0,0] to [0,1] to [1,1], then you walked 7 units of distance.

circa 12 anni fa

Risolto


Add two numbers
Given a and b, return the sum a+b in c.

circa 12 anni fa

Risolto


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

circa 12 anni fa

Risolto


Geometric series
Find the sum, given the first term t1, the common ratio r, and number of terms n. Examples If input t1=1, r=1, n=7 the...

circa 12 anni fa

Risolto


Nearest
*Description* Find the value and index of the element in vector _x_ that is nearest to value _y_. _y_ should be able to be a ...

circa 12 anni fa

Risolto


Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

circa 12 anni fa

Risolto


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

circa 12 anni fa

Risolto


Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

circa 12 anni fa

Risposto
Is it possible to solve FEM by Neural Network?
This kind of problem is typically the case where one would use model reduction techniques. I would refer you to methods such as ...

quasi 13 anni fa | 2

Risposto
Condition
Try this: A = rand(1,10); B = A(A<0.5); C = zeros(size(A)); mask = A<0.5; C(mask) = A(mask); I think this could provide so...

quasi 13 anni fa | 0

Risposto
Are iterative methods always better than direct methods for solving large linear systems?
From my personal experience, there is only one case where I have been able to outperform mldivide through the use of one of the ...

quasi 13 anni fa | 1

| accettato

Risposto
ODE45
First the step in ode45 has little meaning since the method is adaptive and will choose the appropriate time step based on a pre...

quasi 13 anni fa | 1

Risposto
Find max of matrix without using built in function.
The following code will extract the minimum over each column. No loop no max no min and of course not optimal. Feel free to adap...

quasi 13 anni fa | 0

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