Jan

Last seen: Today | Active 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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Please help me to find the errors in my code for predictor corrector method.
I do not know, what you consider as "correct" result. All I see is the running code and there is no chance to predict, what you ...

13 hours ago | 0

Answered
What is the fastest way to get bit stream from 1D float data ?
I do not really get, what you try to do. Which format does the audiofile have? What do you call "bit stream"? Instead of explai...

16 hours ago | 0

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Need help with error in for loop
Your code tests f1<f2 and f1>f2, but not f1 == f2. In this case x1(i+1) and x2(i+2) are not created. r = (sqrt(5)-1) / 2; d = ...

1 day ago | 0

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Matlab has encountered an internal problem and needs to close
Matlab R2014a is not compatible with Windows 10. See https://www.mathworks.com/support/requirements/previous-releases.html R20...

2 days ago | 0

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created file does not appear?
Are you searching in the correct folder? What does cd tell you? Or do you save the file with an absolute path? Maybe you are ...

2 days ago | 1

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Answered
how can i solve this ?
"Phimean=51*1" means, that this variable has the sie [51, 1]. After Vp=reshape(Vp,size(Phimean)); Cp has the same size also....

2 days ago | 0

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matching the element of matrix with an array
A = {[2,3;2,7], [3,2;3,4;3,8], [4,3;4,5], [5,4;5,10], [7,2;7,8;7,12]}; B = [17,8,14,4,18] C = cell(size(A)); for iA = 1:numel...

4 days ago | 1

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Answered
How can i make this code block a function?
A simplified version of your code: function y = my_conv(x, h) z = x(:) .* h; [r, c] = size(z); y = []; for t = 2:r+c ...

4 days ago | 0

Answered
why is this function running infinitely?
% Simplified version: Master1 = eye(22,22); Master1(1, 1) = 0; Master1(22, 22) = 0; scan = 3; temp = Master1; i ...

4 days ago | 0

Answered
where in my code I am thinking wrong?
length() is fragile: It uses to longer dimension. You cannot be sure if your table has more rows than columns. Use height() inst...

4 days ago | 0

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save the output data of GUI
Kp = getappdata(0, 'Kp'); Kr = getappdata(0, 'Kr'); if isfile('myData.mat') % older: exist('myData.mat','file') S = ...

4 days ago | 1

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Answered
use of global variables
I agree with John, Rik and Stephen, and dare to post this as an answer. Can global variables be used in this way? Maybe. The a...

4 days ago | 0

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Is it possible that the "m. file" code is converted from the double precision to the single precision??
This function has been developped an tested since 1995. You cannot be sure, if it works correctly with singles as inputs. conve...

4 days ago | 0

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Answered
Hi, what does ; exactly mean?
Please read the Getting Started chapters of the documentation. This is recommended for beginners also: https://www.mathworks.com...

5 days ago | 1

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for loop return answer in string matrix
Ci = randn(5, 4); pool = ["False", "True"]; a = pool((Ci > 0) + 1)

5 days ago | 0

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Importing .dat file into MATLAB
Searching for more information on the given page I've found: Note: See the PDS JADE SIS Document for more details on the format...

8 days ago | 0

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Random matrix with no repeats in rows and columns.
Create the matrix elementwise. Choose a random element from the available elements. Exclude elements on top and left of the elem...

8 days ago | 1

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Answered
how to use mod function
mod() requires 2 inputs. You provide one only in the callback.

9 days ago | 0

Answered
Why does it give me a problem stating that, Index must not exceed 1?
I guess, that the error occurs here: plot(real(del_ZS1(60)),imag(del_ZS1(60)),'kr') The message means, that del_ZS1 is a scala...

9 days ago | 0

Answered
How to save values from a for loop into a matrix
Do not use "save" as name of a variable. This would shadow an important built-in function, which causes troubles frequently. Yo...

9 days ago | 0

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How to delete columns from a matrix, conditionally?
keep = sum(~isnan(data), 1) >= 100; data = data(:, keep); Your approach does not work, because the matrix data is changed, but...

9 days ago | 0

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Answered
How to call a value from the command window to the editor window
Is it really a small integer? Then simply type "123". If it is a much more complicated nested struct, please explain this. It ma...

9 days ago | 1

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Matlab: In for loop, change name of variable
This is a very bad idea. The severe problems caused by the dynamic creation of variables have been discussed in the forum exhaus...

9 days ago | 0

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Avoiding drift while creating angular rotation with variable degree increments
Let's start with a simplification of the code: phi = 90; angle = 16; ddeg_min = 0.1; ddeg_max = 10; deg(1) = 0;...

9 days ago | 0

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Answered
how can I use a loop instead of cellfun
Why do you want to use a loop? To improve the speed? Then there are better methods: cellfun('isempty', f1) is faster than cellf...

10 days ago | 0

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Slower processing of arrays in structures and pre-allocation
In the first example, the pre-allocation accelerates the code by about 0.15 seconds. With using a field of a struct, the benefi...

11 days ago | 0

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What toolbox is required for allpaths() built-in command?
The documentation looks, like allpaths belongs to Matlab's standard toolbox, but it was introduced in R2021a. Which Matlab versi...

12 days ago | 0

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Answered
How to create a diagonal matrix that starts at (1,1)?
Maybe you mean: n = 4; lambda = 0.2; A = eye(n) * lambda % Or: A = diag(repmat(lambda, 1, n))

12 days ago | 0

Answered
How to extract N array from a for loop?
The question is not really clear to me. With some guessing: a = cell(1, 2); % Pre-allocate for i = 1:2 x = input('ent...

12 days ago | 1

Answered
How to solve second order coupled ODEs with bvp4c?
function dy = YourODE(t, y) k = 17; dy = [y(3); ... y(4); k * y(1) * y(2); ... k * y(1) * y(2)]; end I...

14 days ago | 0

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