# Tarek Hajj Shehadi

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Question

How to combine multiple images into an array

I have a set of 7 images each of size 256x256x3 but since these images are all in gray scale then the channels "3" are useless. ...

6 days ago | 1 answer | 0

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answerQuestion

Algorithm that asks the user to insert 20 different images

I am working on a long program and in this algorithm I want to ask the user on the command window to input 20 different images. ...

28 days ago | 1 answer | 0

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answerQuestion

How to create an interactive 3D axis

I have this vision in my mind that I would hope it could be possible. So consider the following image which I let MATLAB read ...

1 month ago | 0 answers | 0

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answersQuestion

How to run an algorithm 5 times and graph all 5 runs in one grid

I have an iterative algorithm that outputs a graph (decaying function) recording progress of a function during the iteration. ...

2 months ago | 1 answer | 0

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answerQuestion

Strategy for finding optimal omega in SOR method

I had written an algorithm that searches for the optimal weight parameter to be implemented in the successive-over relaxation (S...

2 months ago | 0 answers | 0

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answersQuestion

How to correctly plot a 6x2 grids of subplots

I have 6 images that I wish to plot them in a 6x2 grid of subplots. I applied it as follow : subplot(6,2,1) %... subplot(6,...

3 months ago | 2 answers | 0

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answersQuestion

Constructing the Corrplot function

I am currently learning the functions used in the code from the user Adam Danz's answer in this link https://www.mathworks.com/m...

3 months ago | 1 answer | 0

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answerQuestion

Is there a way to compute average norm after a series of trials?

Suppose I have a matrix and I am solving a least-square problem using QR using my own algorithm. A and b are both generated ...

3 months ago | 1 answer | 0

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answerQuestion

Can a symmetric matrix AA^T be computed using matrix-vector operation?

I am interested in computing which is a symmetric matrix where now there's nothing special about and in the worst case all of...

4 months ago | 0 answers | 0

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answersQuestion

Computing Matrix-Matrix Addition using QR and/or SVD

Apologies if this sounds like an uninformed question but I was wondering if there are theoretical results that talk about the fo...

4 months ago | 0 answers | 0

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answersQuestion

Solving Ax=b but only for the values in some rows of x

I have a linear system where: - is square, large ( and on the order of ), asymmetric, very sparse (around non-zeros) -...

4 months ago | 2 answers | 1

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answersQuestion

Why does MATLAB's built-in "chol" yield a large error compared to my written algorithm

I wish to know why MATLAB's built-in function chol yields a large error on a matrix S=randi([1,100],[25,25]); A=S'*S; [B]...

4 months ago | 1 answer | 0

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answerQuestion

How to plot a Bar Graph without a uniform spacing on the horizontal axis

Hello, suppose I have a bar graph where I am testing some data with How can I have these four values spaced equally on the hori...

6 months ago | 1 answer | 0

### 1

answerQuestion

Mean of the rand function goes against theory

I was working on the signal from which I expect to obtain three impulses where the first and the third impulse are situated at ...

6 months ago | 1 answer | 0

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answerQuestion

How to observe this portion of the graph

When I plot the fourier transform of I obtained the following graph: As you can note, on the horizontal part of the signal, th...

6 months ago | 1 answer | 0

### 1

answerQuestion

How does the command: real(ifft(fftshift(Y))*N) operate?

Hello, I am interested in knowing how this form of the inverse FFT command which is real(ifft(fftshift(Y))*N) works and its ...

6 months ago | 1 answer | 0

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answerQuestion

Plotting Piecewise function produces white empty graph

Consider the following code : function [X] = FourierSinc(a,b,K) w = linspace(-10,10,600); syms w U = piecewise(abs(w)<a*pi,K...

7 months ago | 1 answer | 0

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answerQuestion

Index in position 2 exceeds array bounds (must not exceed 2

Background : I am writing a MATLAB algorithm LinearReg that takes as an input the vectors and and solves the linear regression...

8 months ago | 1 answer | 0

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answerQuestion

Circulant Matrix [Column Wise Traversal]

Below is the row wise circulant matrix algorithm : function C= circulant(x) n=length(x); C=zeros(n,n); C(1,:)=x; for i=2:...

1 year ago | 4 answers | 0