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Jan


12,464 total contributions since 2009

It is easier to solve a problem than to guess, what the problem is.

Questions about FileExchange submissions are welcome - get my address from the code. I do not answer mails concerning questions in the forum.

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Answered
How to store a variable in a vector?
iVec = 0.001:0.001:0.999999; result = zeros(1, numel(iVec)); for k = 1:numel(iVec) i = iVec(k); ... your code r...

3 hours ago | 0

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Answered
How to optimize the computing process of a matrix ?
Pre-allocate the output of loops. Example: num = zeros; for nn=1:length(Y) NUM = size(Y{1,nn}); num(nn...

6 hours ago | 2

Answered
Trying to run a script many times and combine all the results
eList = cell(1, 100); for k = 1:100 callYourScript; eList{k} = e; end A cell array is useful, if the elements, here...

13 hours ago | 0

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Answered
monte carlo simulation in matlab two dices roll
n = 10; % Number or trials throw = randi(6, n, 2); % Value of throws, 2 dice SumThrow = sum(throw, 2...

13 hours ago | 0

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Answered
Euclidean distance of two vectors
Do you know the definition of the Euclidean distance? G = rand(1, 72); G2 = rand(1, 72); D = sqrt(sum((G - G2) .^ 2)); A m...

13 hours ago | 31

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Answered
Matlab 2015a unable to find C++ compiler in windows10 even after installing microsoft professional C++ 2012. Can anyone help? I initially tried installing SDK7.1 but i was gettting .net framework4 installation errors.
https://www.mathworks.com/matlabcentral/answers/233850-how-can-i-install-sdk-7-1-on-windows-10 https://www.mathworks.com/matlab...

4 days ago | 0

Answered
Hi guys. I need help splitting a number into its individual parts and then add them. E.g. the number would be 1994 = 1 + 9 + 9 + 4 = 23
N = 1994; m = floor(log10(N)); D = mod(floor(N ./ 10 .^ (m:-1:0)), 10); >> D = [1, 9, 9, 4]

4 days ago | 0

Answered
P files cannot be analyzed to find their dependencies. Please add P file dependencies manually
I'd start with a web search: Ask your favorite search engine for "Matlab get dependencies of P file". You will find e.g.: https...

5 days ago | 2

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Answered
Stepping Through Text Documents
See https://www.mathworks.com/matlabcentral/answers/57446-faq-how-can-i-process-a-sequence-of-files A more specific answer is p...

6 days ago | 0

Answered
Output argument "px" (and maybe others) not assigned during call to "function1"
If the initial value of varx is smaller than tol already, the body of the while varx>=tol loop is not entered at all. Then e.g. ...

6 days ago | 0

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Answered
where is the the porblem in audiowrite?
In the original question you write: AUDIOWRITE('test.wav',s,srate) In the comment you mention: audiowrite('test.wav',s,t) Th...

6 days ago | 0

Answered
How can I open a file in a compiled application?
The error message is clear in this point: You cannot use open in compiled applications. This is not a limitation by the trial ve...

6 days ago | 0

Answered
Permission to write into text file
Do not use 'mojo.txt' as file name without a path. Remember, that any GUI or timer callback could call cd to change the current ...

6 days ago | 0

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Answered
I am having this error. Could you help?
The error message is clear: You provide a name, which is not an existing file. What is exactly hidden in the omitted rest of: T...

6 days ago | 0

Answered
How to append cell arrays with a very specific form
Or: C = {... 'Rating1' [] [] [] '8'; ... 'Rating1' [] [] '3' []; ... 'Rating1' '2' [] [] []; ... 'Rating1' [] '4' [...

6 days ago | 0

Answered
Error using mex 'No supported compiler was found' on Mac.
Posting the error message offers new insights. Did you try this already - in a command shell of the operating system: sudo xcod...

6 days ago | 0

Answered
Shuffle binary vector (n0 = n1) with constraints: number of consecutive repetitions
A brute force approach: function V = ShuffledVector x = 100; % Number of elements, assumed to be even Z = 5; V = [true(1, x...

6 days ago | 2

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Answered
how to calculate the area under a curve?
The area between a curve and the X axis is determined by the integral. So use trapz: x = 0:100; % Square brackets waste time ...

7 days ago | 0

Answered
Writing data to a structure array without loop
As written by Stephen before: There is no vectorized way to set the value of sub-fields of struct arrays. The expression [ax(...

11 days ago | 0

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Answered
How can I vectorize this function with nested FOR loop?
n = 1000; L = rand(24, n); T = zeros(n, 1); for i=1:n K = exp(-4*sum((L(:,i) - L) .^ 2, 1) ./ sum(L(:,i).^2, 1)); ...

11 days ago | 0

Answered
which matlab is compatible with windows 10, 64bit machine?
I'm running Matlab R2009a with the Signal Processing toolbox successfully under Windows 10. The installation and setup of the Me...

12 days ago | 0

Answered
Difficulty storing Output from Loop (Unable to perform assignment because the size of the left side is 1-by-1 and the size of the right side is 2-by-1)
To store arrays of different sizes, use a cell array: KMaxSBPFullTime = cell(1, 19); for i = 1:19 KMaxSBPFullTime{i} = ... ...

12 days ago | 0

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Answered
Which way of programming is more efficient and faster?
%Case 1 X = 1; Y = X + 4; Z = X + Y; %Case 2 X = 1; Y = X + 4; Z = X + Y; The documentation of Matlab stated, that the J...

13 days ago | 2

Answered
having problem to solve somthing in matlab
S = sum(x) is equivalent to S = 0; for k = 1:numel(x) S = S + x(k); end If you want to, you can call this as a subfunc...

13 days ago | 0

Answered
Nested loop problem with the second index
The problem of you code was cp(i.*j,:). i*j is not a growing index. In the 1st iteration 1*1 is fine. For i=1 it works for the c...

13 days ago | 0

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Answered
Can I overwrite a function in a compiled program with a custom version?
This will not work. And if it works, it would conflict with the license conditions. Do not provide parameters as M-functions, b...

14 days ago | 0

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Answered
MATLAB DualCPU Hyper-Threading support
Yes. Matlab will use the available cores. At least most likely. Matlab might split the array columnwise and if the input has 5 c...

15 days ago | 0

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Answered
Can anyone help me to understand the logic of below code
Start with a simplification of the code to make it easier to read: % find the points in the front surface for z = min(Zb):max(...

15 days ago | 0

Answered
Text files for export the data
Storing numerical data in text files has the disadvantage, that the values need to be converted twice. Prefer storing the data i...

15 days ago | 0

Answered
how to change the bit of any matrix?
A = [12, 23, 32, 14]; B = bitset(A, 4, 0) Or: S = de2bi(A); S(:, 4) = 0;

15 days ago | 0

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