Answered
How to put for loop outputs into array?
With MATLAB it is always much simpler and more versatile to loop over indices, rather than looping over data. When you do that, ...

6 years ago | 0

Answered
for end loop variable not saving
Your code calculates numFrames using two different methods. method gives 500 (apparently correct), method gives 1 (apparently ...

6 years ago | 0

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How do I loop trough variables
"Why is that?" Your confusion stems from several things. [] square brackets are a concatenation operator, not a "list" operato...

6 years ago | 0

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How to find the max matrix of a multidimensional matrix array
I suspect that you actually mean that you have a 3D array, in which case you can use max: max(multiarray_star,[],3)

6 years ago | 2

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Answered
All possible n-length combinations of two numbers
Use ndgrid: (in these examples I used u=5, v=7): [X,Y] = ndgrid([5,7]); % n = 2 M = [X(:),Y(:)] [X,Y,Z] = ndgrid([5,7]); % n ...

6 years ago | 1

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Answered
Making matrices of different dimensions and clubbing them together
A simple and efficient approach using a cell array: N = number of loop iterations C = cell(1,N); for k = 1:N ... your co...

6 years ago | 0

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Answered
10 by 10 matrix grid
Use a table: https://www.mathworks.com/help/matlab/tables.html

6 years ago | 1

Answered
Taking 3-D matrices out of a 4-D matrix
Although most likely you would be better off not splitting up your perfectly good numeric array, if you really want to you could...

6 years ago | 0

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Answered
How to change a function within a loop at certain point in MATLAB
" I tried some stuff with while loops and if statements..." That is entirely the wrong approach in MATLAB. Just use logical ind...

6 years ago | 0

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Coordinates of a 3 by 3 by 3 array
Solution For >2 dimensions you need to use ind2sub (as the find documentation also mentions): >> yy = zeros(3,3,3); >> yy(1,2...

6 years ago | 1

Answered
Saving nonempty columns of cell as separate variables with specific names in matfile
Fake data: >> allad = cell(1,80); >> allad{8} = rand(10000,1); >> allad{25} = rand(5000,1); You can use cell2struct and save...

6 years ago | 1

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Answered
"V = V.';" What Does This Syntax Mean?
The difference is: ' complex conjugate transpose. .' transpose Several basic numeric operations have two versions, one for l...

6 years ago | 0

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Answered
how to check if random number is equal to 1
x = [1,3,3]; v = randi(numel(x)); total = total + x(v); if x(v) == 1 r = 1; end

6 years ago | 0

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How to access all elements within a structured cell array without looping?
"I am not using the structure(1).field1 syntax" You should be. It would allow you to use efficient syntaxes for accessing your ...

6 years ago | 1

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How to tell if a value is an integer?
"...which should apply to this since x=1925 ..." Nope. Its actual value is: >> x = 725*(77/29); >> fprintf('%.40f\n',x) 1925...

6 years ago | 1

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Answered
I want to split cell vector
Using datetime: >> DT = datetime(date,'InputFormat','yyyy-MM-dd'); >> DT.Year ans = 1985 1985 1985...

6 years ago | 0

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Answered
off value is returned when plugging into function
Your calculator calculated sine using degrees, but MATLAB's sin function uses radians. You will get exactly the same (most like...

6 years ago | 2

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Undefined operator '<' for input arguments of type 'struct'
Explanation This error occurs because GlobalBest.Cost is a structure. Before the loop you defined GlobalBest.Cost to be Inf, s...

6 years ago | 0

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Answered
Using regular expression to extract numeric data from text file
mat = str2double(vertcat(tokens{:})) You will need to reshape the matrix, e.g.: mat = reshape(mat.',9,[]).' See: https://www...

6 years ago | 0

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Answered
Find Max of Array of structures.
Where S is your structure: [cnt,idx] = max([S.gold]); S(idx).Countries A comma-separated list is used to concatenate all of t...

6 years ago | 0

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Extract Last two Words from strings in cell
>> A = {'There is a world of good you could perform'; 'All the money in the world couldnot have saved her'; 'W'; 'My world'} A ...

6 years ago | 0

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What does this mean?
The (:) syntax converts an array of any size and number of dimensions into a column vector. So that code calculates the mean of...

6 years ago | 0

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I have a matrix that contains strings and i have to find words in it.
>> mat = ['erduopiece';'tprometall';'isdpstubaa';'gepomsicmv';'steiuratea';'otnncbcbrg';'uefctelule';'vliorbroie';'elenuuirnt';'...

6 years ago | 0

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How to simplify my looping code?
Your code is slow and complex because: you expand all of the arrays xk2, xk3, ... xk208 on every loop iteration, which forces M...

6 years ago | 1

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Answered
Replacing character between square brackets
>> A = {'[ABC; DEF];[GHI; JKH];'; '[ZBC; YEF];[XHI; UKH];'} A = '[ABC; DEF];[GHI; JKH];' '[ZBC; YEF];[XHI; UKH];' ...

6 years ago | 0

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Answered
dir sorts filenames wrong
"what can i do?" If the filenames contain sufficient leading zeros, then split the names using fileparts, then sort the names, ...

6 years ago | 0

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Answered
How can I make my MATLAB code run faster?
Read the advice given here: https://www.mathworks.com/help/matlab/matlab_prog/techniques-for-improving-performance.html In par...

6 years ago | 0

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Answered
Convert cell array into matrix, but with removing the words, commas, etc
>> ED_array = {'1, thin fin, 1, 2, 7, 8, 0.1, 400.0';'2, thin fin, 2, 3, 6, 7, 0.1, 400.0';'3, thin fin, 3, 4, 5, 6, 0.1, 400.0'...

6 years ago | 0

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Answered
How generate combination list of 4 independent vectors?
A simple solution for a fixed number of vectors: v1 = [1;2;3;4]; v2 = [5;6;7]; v3 = [8;9]; v4 = [10]; [x1,x2,x3,x4] = ndgr...

6 years ago | 2

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Answered
Converting a string into a numerical array
Much more efficient than the accepted answer: >> str = '[1,2,3,4,5]'; >> vec = sscanf(str(2:end),'%f,',[1,Inf]) vec = 1 ...

6 years ago | 1