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Stephen Cobeldick


5.343 total contributions since 2014

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Answered
Change colour order and restore it
"I want to change figure colour order" Figures do not have a ColorOrder propery, only axes do. It is easy to change the axes' ...

ongeveer een uur ago | 0

Answered
how to choose the number in a random manner
C = randi(G)

ongeveer 3 uur ago | 0

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How Can I count the ascending runs in array ?
As KSSV wrote, you might find diff useful: >> y = y([1,1:end]) y = 1 1 1 0 0 1 1 1

ongeveer 7 uur ago | 0

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Vectorized Search of substrings in Cell Array
>> t = {'abcde','bcde','abc','ac'}; >> ~cellfun(@isempty,strfind(t,'bc')) ans = 1 1 1 0

ongeveer 7 uur ago | 0

Answered
To get the column number of max and min number
>> a = [1,5,3,7,4] a = 1 5 3 7 4 >> [~,mxi] = max(a) mxi = 4 >> [~,mni] = min(a) mni = 1

ongeveer 22 uur ago | 1

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Answered
Little Bit Help Required Regarding Loop
"I just want to save all the values means every time when loop run it keep save the last results and save the new results in the...

1 dag ago | 1

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Get one element from each row but not the same column
All six permutations of sums selecting one value from each row: >> N = 3; >> A = randi(9,N,N) A = 8 4 8 9 6 7...

1 dag ago | 1

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what does the L-shaped bracket mean?
Those brackets are actually the common way in mathematics to represent the floor function: https://www.mathsisfun.com/sets/func...

2 dagen ago | 2

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Matrix element changing with loop
5 is a scalar. A scalar has size 1x1. On the second loop iteration a has size Nx2 (we don't know the actual size because you di...

2 dagen ago | 0

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how do you check that a value input into your code is exactly 7 digits long before proceeding?
idNumber = '1234567'; assert(numel(idNumber)==7,'Wrong length ID number')

3 dagen ago | 0

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How can I generate an array of binary data of this form?
It might not be the most beautiful algorithm in the world, but this works (on 64 bit MATLAB) for even N values up to at least N...

3 dagen ago | 0

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Conditional function creating with @ handle
Directly for this specific calculation: >> f = @(x,y) x + y*(1-2*((x*y)<=1)); >> f(1,2) ans = 3 >> f(2,1) ans = 3 It wor...

3 dagen ago | 1

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Passing data through fminsearch
You should definitely avoid global variables. For your situation the easiest way to parameterize a function is to use a simple ...

4 dagen ago | 0

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Any suggestion on how to solve this problem using Matlab?
I know this is homework, but someone needs to show that it is a waste time writing loops, it is much better to write simple vect...

4 dagen ago | 0

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Duplicate every element of a matrix to NxN elements
>> M = [1,2;3,4]; >> kron(M,[1,1;1,1]) ans = 1 1 2 2 1 1 2 2 3 3 4 4 3 3 4 4

4 dagen ago | 0

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Answered
accumarray does not return the correct sum
Your data: hdr = {'Date','ID','x','y','z','Profit'}; arr = {... '01-Jan-2019' 157350 0 1 100 0.470000000000000 '01-Jan-2019'...

5 dagen ago | 1

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Strange behavior of the editor in the forum
Unfortunately the new editor does not work with Windows high-contrast mode, most of the toolbar buttons end up totally blank: ...

5 dagen ago | 0

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Experts of MATLAB, how did you learn? Any advice for beginner/intermediate users?
I reject the label "expert", but here is my two cents worth anyway: MATLAB Specific: MATLAB has a great feature that very few ...

5 dagen ago | 50

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Answered
where (what package) is the Matlab's wvd function?
Signal Processing Toolbox. You can easily find this out yourself using the online help, simply finding that page using your fav...

6 dagen ago | 0

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Using cellfun() to set cell array of graphic objects 'Visible' Property to 'off'
You will need to define an anonymous function like this: cellfun(@(g)set(g,'Visible','off'),your_cell_array_of_handles) Note t...

6 dagen ago | 2

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Answered
Create function handle with several variables/arguments
Why not just vectorize the multiplication and summation?: fun = @(z) sum(cv(:).*z(:)); https://www.mathworks.com/help/matlab/m...

6 dagen ago | 2

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Answered
How to concentrate matrix 100 times?
Your approach is entirely in the wrong direction: using numbered variables is a sign that you are doing something wrong with you...

7 dagen ago | 0

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Answered
How to use the prctile (X,p,'all') function?
According to the MATLAB documentation the 'all' option was added in version R2018b: https://www.mathworks.com/help/stats/releas...

7 dagen ago | 1

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Answered
Using the matlab to achieve the a(k)+a(j) when k is not equal to j in every stage
a = [1,2,3,4]; for k = 1:4 b = 0; for j = 1:4 if j~=k b = b + a(k) + a(j); en...

7 dagen ago | 0

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Answered
Sum columns of matrix
>> M = [1,5,2,4,3,2;2,3,1,4,4,1;4,5,2,2,3,1] M = 1 5 2 4 3 2 2 3 1 4 4 1 4 5 2 2 3 1 ...

8 dagen ago | 0

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Answered
How to split a [30x250x1000] array into 1,000-2D matrices
Just use a simple cell array: function epoch = matrix_extractor(data_class,number_epochs) data_class; C = cell(1,numb...

8 dagen ago | 1

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Answered
Too many input arguments
Everywhere you call function HionpH you call it with two input arguments, but you defined the actual function with just one inpu...

8 dagen ago | 1

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Using fprintf to create a table of values
Remember that MATLAB is column-major, so it works down the columns first. Pay careful attention to the orientation of the vector...

9 dagen ago | 0

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How to vectorize double sum
>> N = 4; >> x = randi(9,3,N) x = 5 4 8 9 2 9 9 8 1 1 4 1 >> F = @(c)bsxfun(@minus,x(:,c),x(:,c...

9 dagen ago | 1

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Answered
Increment dates using for loop
>> D = datetime('01-Jan-2018'); >> N = 14; >> G = 3; >> V = D + caldays(0:ceil(N/G)-1).'; >> V = repelem(V,G); >> V = V(1:N...

9 dagen ago | 0

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