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Bruno Luong


918 total contributions since 2009

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Answered
How to do a matrix like this??
(1:10).^((1:3)') or on older MATLAB bsxfun(@power,1:10,(1:3)')

ungefär 11 timmar ago | 0

| accepted

Answered
Linear programming, interested in only 1 variable
If you want to minimize x1 under A*x <= b f = zeros(size(x)); f(1) = 1; x = linprog(f, A, b); (x2,...,xn) is not meaningless...

ungefär 14 timmar ago | 2

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Answered
What is the difference between using conv function and manual coding method using MATLAB?
Your twin brother/sister/class mate is faster, he/she asked the same question earlier. Don't copy the same answer, your teacher...

ungefär 15 timmar ago | 0

Answered
Create a random sequence with specified values
I don't understand the first question. For the second question, I might kind of guess. S = [1 2 3 4 8 11 13 14 15 16 18 19 20...

ungefär 15 timmar ago | 0

Answered
Find the cell index in a nested cell array, corresponding to a string (by using strcmp)
A{1} = { ... {'Up' } {'Down' } {'Left' } {'Right'} {'BLUE'} {'1' } {'7' } {'1' } {'8' } ...

ungefär 16 timmar ago | 1

Answered
How can I find the vector from two points in 3D?
B-A

ungefär 20 timmar ago | 0

Answered
Binary floating point Representation in Matlab
To overcome the limitation of dec2bin at 52 bits A=[ 0.1900 -0.0300 -0.1300 0 0.1500 -0.0700 0.0500 0.1600 -0.2500 -0.1900]...

ungefär 21 timmar ago | 1

Answered
1d Convolution using Matlab's conv() function
Ba Ba Black Sheep wrote len(pad) = floor(len(v) / 2) Actually the above is wrong, In case CONV using with of 'same' option, t...

ungefär 22 timmar ago | 0

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Answered
Convolution Computations results for a system response.
You make few mistakes, indexing and flipping (see careful conv documentation, the subtility is there, though TMW never mention w...

ungefär 22 timmar ago | 0

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Answered
Find Common elements between any two columns in each matrix
Not sure but keyNeuronMat1(1:10,1:4) & keyNeuronMat2(1:10,5:8) Give you common neurons/groups.

en dag ago | 0

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Answered
How to display all decimal numbers for floating numbers?
Try this fprintf('num1+num2 = %1.16g\n',adding_num1_and_num2)

en dag ago | 0

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Answered
randomly divide vector into 2 parts.
For the record, here is how I would do: n = size(index_rating,1); i = randperm(n,round(training_data*n)); dataTraining = in...

en dag ago | 2

Answered
Conditioning bivariate gaussian distribution
There a few issues with your code. First INTEGRAL is integration of a scalar function, you cannot integrate a vector function. ...

en dag ago | 0

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Answered
randomly divide vector into 2 parts.
Always post complete code that can run. don't less us geuss what is the size/class of the inputs First assumption: non_zero_ent...

en dag ago | 1

Answered
Filling area between more curves
Change accordingly to suit your need. tt = linspace(0,2*pi,361); xy = [2*cos(tt); 4*sin(tt)]; close all hold on pl...

2 dagar ago | 3

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Answered
how to change axis of a matix?
load('testdata.mat'); Ufun = @(X,Y,Z) X; Vfun = @(X,Y,Z) Y./(Z+200); [X,Y,Z] = ndgrid(x,y,z); U = Ufun(X,Y,Z); V = Vfun...

2 dagar ago | 0

Answered
how to find rows and columns without using size
[numel(prod(A,2)) numel(prod(A,1))] % prod instead of sum for a change

2 dagar ago | 0

Answered
how to find rows and columns without using size
for 2D array p=numel(A); if p==0 try r = A(1,:); n = 0; m = numel(A*zeros(0,1)); catch ...

2 dagar ago | 0

Answered
how to assign the equality relationship for the elements symmetry to the diagnoal of a matrix
% random test matrix A = rand(4) % symmetrize of A by copying the lower part to upper part B = tril(A)+tril(A,-1).' for ...

2 dagar ago | 0

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Answered
How to add two values to a matrix each five values of that matrix in order to have a new matrix?
XY = [1; 2; 3; 4; 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15]: r = ones(size(XY)); r(5:5:end) = 3; XYZ = repelem(XY,r) Note if ...

2 dagar ago | 2

Answered
What happened to the figure toolbar in R2018b? Why is it an axes toolbar? How can I put the buttons back?
Duplicate my poste here For R2019b all the tricks found previously no longer work. I found this one does the trick set(groot,...

3 dagar ago | 1

Answered
How to set disableDefaultInteractivity for all axes?
For R2019b all the tricks found previously no longer work. I found this one does the trick set(groot,'defaultAxesCreateFcn', ....

3 dagar ago | 1

Answered
determine minimum from the first column values of matrix and removing the rest of the rows
[~,imin] = min(E(:,1)); G = E(imin,:)

3 dagar ago | 0

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Answered
selecting rows from C with associated values in D, while using A and B values as references to produce E and F matrices
A = [1 2]; B = [1 3]; C = [ 1 19 18 4 3 0 0 0 0 0 0; 1 19 2 17 6 7 5 4 3 2 0; 1 16 15 17 6 7 5 4 3 2 0; ...

3 dagar ago | 0

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Answered
Placing annotations at specific xy coordinates
There are several tool on File Exchange, such as this one

3 dagar ago | 0

Answered
C/Fortran callback to MATLAB
Not sure what you mean by "Callback". Callback to me is kind of event trigger function like an SW interruption. Anyway if you h...

3 dagar ago | 0

Answered
Main diagonal operations problem
Here is a method that has two advantages: without the need of Roger's FEX randfixedsum Produce matrix with rigourous uniform c...

3 dagar ago | 1

Answered
Huge matrix with Nchoosek
You became real "Patient" now? Good! Then run this look at the screen and wait until it stops. If your type Ctrl C or kill MATLA...

4 dagar ago | 0

Answered
Position of the left nearest one value in a vector
v = [0 0 1 0 0 0 1 1 1 1 0 0 1 1 1 0 0 1 0] % requirement: it must start with 0 Method 1 i0=find(v==0); i1=find(v==1); [~,lo...

4 dagar ago | 1

Answered
Max function working for a sample of images but not all
Sato's example code [~,idx]=max(A,[],7) No the correct call is [~,idx]=max(A,[],3) You take the max along the third dimensio...

4 dagar ago | 0

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