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Adrien Leygue


CNRS / Ecole centrale Nantes

Last seen: 5 months ago Active since 2011

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

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  • Personal Best Downloads Level 2
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  • 5-Star Galaxy Level 4
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  • Knowledgeable Level 1
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Solved


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...

6 years 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)).

6 years ago

Solved


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

6 years ago

Solved


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...

6 years ago

Solved


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...

6 years 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...

6 years 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] n=0...

6 years ago

Solved


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...

6 years ago

Solved


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,...

6 years ago

Submitted


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

8 years ago | 32 downloads |

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Solved


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".

11 years ago

Solved


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]

11 years ago

Solved


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...

11 years ago

Solved


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...

11 years ago

Solved


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 ...

11 years ago

Solved


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.

11 years ago

Solved


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

11 years ago

Solved


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 ...

11 years ago

Solved


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...

11 years ago

Solved


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 ...

11 years ago

Solved


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:...

11 years ago

Solved


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...

11 years ago

Solved


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...

11 years ago

Answered
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 ...

11 years ago | 2

Answered
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...

11 years ago | 0

Answered
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 ...

11 years ago | 1

| accepted

Answered
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...

11 years ago | 1

Answered
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...

11 years ago | 0

Answered
Should I use object oriented programming in MATLAB?
I have recently had to rewrite 90% of our research code (model reduction) which had become too messy and too intricate to suppor...

11 years ago | 1

| accepted