Adrien Leygue

CNRS / Ecole centrale Nantes

Last seen: 3日前 | 2011 年からアクティブ

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

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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...

1年以上前 | 1 件の回答 | 0

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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...

2年弱前 | 1 件の回答 | 0

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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...

約8年前

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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)).

約8年前

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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...

約8年前

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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...

約8年前

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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...

約8年前

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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...

約8年前

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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] n=0...

約8年前

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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...

約8年前

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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,...

約8年前

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

10年弱前 | ダウンロード 15 件 |

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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".

13年弱前

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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]

13年弱前

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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...

13年弱前

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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...

13年弱前

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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 ...

13年弱前

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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.

13年弱前

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

13年弱前

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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 ...

13年弱前

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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...

13年弱前

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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 ...

13年弱前

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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:...

13年弱前

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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...

13年弱前

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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...

13年弱前

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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 ...

13年以上前 | 2

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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...

13年以上前 | 0

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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 ...

13年以上前 | 1

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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...

13年以上前 | 1

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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...

13年以上前 | 0

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Adrien Leygue

CNRS / Ecole centrale Nantes

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