Community Profile # Sherwin

Last seen: 5 months ago Active since 2016

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Question

several minimum values on a vector
I want to use the min function to find the index of the element with minimum value on vector Z: [X,Y] = min(Z,[],1); how can I...

5 months ago | 2 answers | 0

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Question

Using break/continue in a for loop
I have this loop and I want the second loop to have steps with different sizes and I need the inner loop to end after each itera...

5 months ago | 1 answer | 0

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Question

What is the equivalence for the Big M in MATLAB?
Hi, If I want to assign a really big number to a matrix so that when I want to take the minimum of the vector then that element ...

5 months ago | 1 answer | 0

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Question

importing only one element of a matrix into a function
Hi, I have a loop which calls a function in it. The function needs only one element of the matrix that the loop is counting. Can...

5 months ago | 1 answer | 0

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Question

How to use break/continue?
Hi, I have the following matrices, AT = [1 1 0 0 0 ; 0 0 1 1 0; 1 0 0 1 1]; % a 3*5 matrix yHT = [1 ; 1 ; 0 ; 0 ; 1]; % a 5*...

5 months ago | 0 answers | 0

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Question

obvious error in differentiation
Hi, I have a function as Z = (T-Tp)*lambdam*u + ((p*(h^2)*gammaw)/k2) + ((p^2)*(h^2)*l*alpha*r*gammac)/(D*u*C) + (ro*p*(l^2)...

6 months ago | 1 answer | 0

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Question

Empty Sym 0-by-1
Hi, I have this code which returns empty sym for ustar. I thought it's because maybe I can't get u as a closed form solution fro...

6 months ago | 2 answers | 0

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Question

How to customize a complex differentiated equation?
I have an equation as s = diff(Z,u)= sqrt((r^2+e3*G*H*x^4e2-f^3*b)/(c^7+r*x*w*p)); I want to put this equation (diffrentia...

6 months ago | 1 answer | 0

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Question

Error using PARFOR: Index exceeds the number of array elements
Hi, I'm using a parfor loop in my GA algorithm. After some time of running this error pops up: Error using distcomp.remotepar...

1 year ago | 1 answer | 0

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Question

Playing an Internal Beep at the end of a run (without speakers)
Hi, Is there a command that can produce internal beeping sound at the end of a run? I mean the beeping sound that you can hear ...

1 year ago | 0 answers | 0

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Question

How to save specific rows of a Cell Array?
Hi, I have a cell array O which stores the output of an iterative algorithm. After each 1000 iteration, I want to save the l...

1 year ago | 1 answer | 0

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Question

Is there an online remote server that I can run my code on?
Hi, I have a GA code that takes a long time to converge (4-5 days). I want to know if there is an online remote server that I ca...

2 years ago | 2 answers | 0

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Errors without any explanations
For anyone having the same problem, as one of the commenters indicated, this only happens in Live Scripts. Running the code as s...

2 years ago | 0

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Question

Errors without any explanations
When I run my codes on MATLAB 2020a, I get erros without any explanations. There is just a red circle with a white exclamation m...

2 years ago | 1 answer | 0

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Question

How to use vectors instead of loops?
Hi, I am new to coding and I seem to be using too many loops/cells which significantly slows down my codes. I want to define a...

2 years ago | 0 answers | 0

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Question

How can I make this code faster?
<</matlabcentral/answers/uploaded_files/66372/SA.png>> Hi, I have a cell array, like the attached image, named SA. In ea...

5 years ago | 1 answer | 0

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Question

How can I place a cell array in another cell array using 'find'?
Hi, I have a 50x1 cell array (A = cell(50,1)), each cell has a 4x960 matrix(all elements are 0 or 1) in it, I want to this for...

6 years ago | 1 answer | 0

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Question

How can I sort a cell array according to one column's order?
Hi, I have a cell array of (50, 2), each cell in the first column contains a 4x960 matrix but the cells in the second column ar...

6 years ago | 1 answer | 0

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Question

How can I show equality in cell arrays?
Hi, I have an array like this: P = cell (50 , 5); each cell in the first column of this array is a 4x960 matrix with 0/1...

6 years ago | 1 answer | 0

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Question

Why do I get an index error?
Here in this part of my code r3 = randi([1 N],[G 1]); for i = 1:G ch = ceil(r3(i,1)/3840); [r, c] = ind2sub([4 960],...

6 years ago | 3 answers | 0

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Question

Why do I get subscript indices error?
Hi, I have a code like this, r2 = randi([2 64]); [m, n] = ind2sub([4 16],r2); n = (n-1)*60; CH1(m:end,n:...

6 years ago | 1 answer | 0

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Question

How does 'break' work?
Hi, I need to know what happens after "break"? what does the loop skip to? I need it to skip to "for i = 1:50" and start from a ...

6 years ago | 2 answers | 0

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Question

How to show a column of a cell array
Hi, I have a cell array, the first column is made up of 50 cell of 4x960, but the rest of the columns are 50 cells of 1x1, ...

6 years ago | 1 answer | 0

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Question

Cumulative sum of cell array column
Hi I have this cell array and I need to get the cumulative sum of column 7. Please help. A = Columns 1 through 3 ...

6 years ago | 2 answers | 0

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Question

How to count the values with a specific condition in different cells of an array?
<</matlabcentral/answers/uploaded_files/61614/Array.png>> Hi, I have an array that consists of cells with different lengths. ...

6 years ago | 0 answers | 0

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Question

How can I import Excel data in a cell array?
Hi, I have a cell array as I coded here: tt = cell (4,1); for i = 1:4 tt {i,1} = cell (16,1); for j = 1:16 ...

6 years ago | 2 answers | 0

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Question

How can I import Excel data in a cell array?
hi, I have a cell array as I

6 years ago | 1 answer | 0

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Question

How can I have the cumulative sum of the returned values of a function as a vector?
I want to have the cumulative sum of the returned values of AB function in a loop...I want the cumulative sum of the returned va...

6 years ago | 1 answer | 0

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Question

How can I use FIND to extract the indices of 1 elements in a 0/1 matrix?
I only have some 0/1 matrices and they are generated randomly. How can I define X like this: (please see Matrix image) The fi...

6 years ago | 1 answer | 0