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Bruno Luong


961 2009 年以降の合計貢献数

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Bug with conv2
The answer is correct. May be you expect the result with sliding sum with unflip kernel which is of course wrong.

14日 前 | 1

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How to replace for loop with vectorization?
[iii,jj]=ndgrid(ii,1:size(res,2)); v=accumarray([iii(:) jj(:)], res(:))

21日 前 | 1

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Generate a random matrix without repeating any value in row and column.
A=mod((0:3)+(0:3)',4)+1; R=A(randperm(end),randperm(end))

24日 前 | 0

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Getting back the solution to Ax=b after reordering A
This is correct: clc clear close all A=[4 1 2 0.5 2;1 0.5 0 0 0;2 0 3 0 0;0.5 0 0 5/8 0;2 0 0 0 16]; % P_amd=amd(A); P_amd...

24日 前 | 0

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how can i generate the random numbers for specific probabilites
v = [ 0, 15, 25, 35, 45, 20]; % values P = [0.01, 0.15, 0.20, 0.50, 0.12, 0.02]; % the correspond probability c ...

25日 前 | 0

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combination and their sum
A = [4 2; 5 7; 3 1] m = size(A,1); b = dec2bin(0:2^m-1,m)-'0'; C = A((1:m)+m*b).' Result (each column is a co...

25日 前 | 0

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How to calculate determinant of matrices without loop?
a(:,1).*b(:,2)-a(:,2).*b(:,1)-a(:,1).*b(:,3)+a(:,3).*b(:,1)+a(:,2).*b(:,3)-a(:,3).*b(:,2)

約1ヶ月 前 | 1

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Equality constraint in quadratic programming
Yes, il looks right to me. EDIT: No Q(3,1) must be 0 Q=[2 1 0; 1 4 0 ; 0 0 6]

約1ヶ月 前 | 0

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Find matching points from two coordinate systems
Look for the literature of image registration. For simple rotation/scaling/translation you can use Matt J's submission For mo...

約1ヶ月 前 | 0

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How vectorize this operation
n=10 m=3 x=rand(n,1) y=rand(m,1) % your method z = nan(length(x),1);% Just some fake data to define the size of z. could ...

約1ヶ月 前 | 1

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Solve Overdetermined Linear System
For overdetermined system the "\" returns least-square solution, meaning it doesn't solve exactly your system, but returnes the ...

約1ヶ月 前 | 0

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How to remove duplicates in matrix with condition
X = [1 10;2 20;3 30;3 31;3 32]; Xs=sortrows(X); [~,I]=unique(Xs(:,1),'last'); XResult = Xs(I,:)

約1ヶ月 前 | 1

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How to taker power of a permutaion matrix
You have 2 ways to compute it, from the permutation itself, or using the permutation matrix then raise a power of it. % Generat...

約1ヶ月 前 | 0

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How to design a Toeplitz matrix with negative lower triangle elements and zero main diagonal elements
toeplitz(0:-1:-5,0:5)

約1ヶ月 前 | 1

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How to define a covariance matrix that is positive semi definite?
L=randn(3); sigma=L'*L

約1ヶ月 前 | 0

質問


path of a mfile not on search path
When an mfile is not on the search path or current path and when user types the name, MATLAB find it and issues a suggestion >>...

約1ヶ月 前 | 2 件の回答 | 0

2

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How to generate a random data vector that follows a constraint
This will generate uniform distribution (within to polytope) N = 10; Etotal = 0; E = -log(rand(N+1,1)); E = E(1:N,:)./sum(...

約2ヶ月 前 | 2

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Increasing Java Heap Memory of target machine so that EXE runs on target machine with MCR
According to my test, the stand alone app uses the sames amount of java heap memory than your MATLAB preferences. To set the a...

約2ヶ月 前 | 0

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Model of a crowd on concert venue or how to distribute random points according to the 2D window distribution
Torsten's rejection might bias the distribution. One of the better approach is to repell the points when they are close to each...

約2ヶ月 前 | 0

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How to genetate random number under constraint
Similar question has been answered in this thread

約2ヶ月 前 | 0

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How can I evenly distribute Points inside of a triangle?
Use mesh generator like MESH2D

約2ヶ月 前 | 1

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What code to make figure window fullscreen with subplot?
Check out This thread hope it's not obsolete. If you run on Windows WindowAPI (Jan's reply) is the only one which makes real ful...

約2ヶ月 前 | 0

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could anyone help me to calculate the euclidean distance for the matrix.
Hi Christtine, very good initiative. I think at least 90% of use-case would be p=2.

約2ヶ月 前 | 0

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What is the different between "null" command and "svd" command
Beside the trivial must do "reading the doc" you can just type edit null to see how NULL call SVD and keeps the singular vecto...

約2ヶ月 前 | 0

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Is this for-loop vectorizable?
I don't think sequential search can be vectorizable. You might improve a bit of the search by implementing dichotomy seach rath...

約2ヶ月 前 | 0

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How to draw random number from a conditional distribution
Your problem is not well defined, there are many Y that can meet such requirement (if you guys think it is impossible beside a s...

約2ヶ月 前 | 0

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How do i write a code which can calculate the cross production of two vectors?
If A and B are 5 x 1 null([a;b]) returns a (5 x 3), 3 vectors in R^5 basis of NULL(SPAN(a,b))

約2ヶ月 前 | 0

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Does inpolygon work for latitudes and longitudes on the surface of the earth?
A polygon in lat/lon will NOT map to a "polygon" on the sphere. A "polygon" on the sphere composed by edges that are grand circl...

約2ヶ月 前 | 0

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Format number in the same format as disp
>> x=logspace(1,3,10) x = 1.0e+03 * 0.0100 0.0167 0.0278 0.0464 0.0774 0.1292 0.2154 0.3594...

約2ヶ月 前 | 1

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submitWithConfiguration not working in matlab R2019b
The problem is in the statement parts = parts(conf); In MATLAB 2019B, you cannot use the same name of variable and function, b...

約2ヶ月 前 | 0

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