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Jan


12,478 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
Delete table from GUI app variable
Perhaps you mean: delete(app.table)

약 5시간 ago | 0

Answered
How to rename all instances of persistent variables?
Simply remove the persistent command temporarily, rename the variable and insert persistent again. You can open the file e.g. ...

2일 ago | 0

| accepted

Answered
How to update variable names after a "clear"
Clearing variables is rarely useful in Matlab, but a waste of time only. So on one hand it is not exactly clear, what you are as...

2일 ago | 0

Answered
Variable is not fully defined on some execution paths.
Does this help? tcell2 = cell(10,10); for t = 1:10 for s = 1:10 tcell2{t,s} = imcrop(pic2, ... [(t-...

2일 ago | 0

| accepted

Answered
How to select numbers?
F = rand(1,400); M = rand(1,400); Tf = log(-F) / 0.73; Tm = log(-M) / 1.2; It is hard to guess, what this means: "I should...

2일 ago | 1

Answered
I can´t save
Some virus scanners limit the write access to the user's Documents folder to block encryption trojans. Check the logs of the vir...

2일 ago | 0

Answered
Replace pixels in a matrix without using histeq
for i = 1:1:r %go through rows for j = 1:1:c %columns img_heq(i, j) = T(img(i,j) + 1); end end

2일 ago | 2

| accepted

Answered
Error using mex: undefined reference for user build package
According to the documentation https://www.mathworks.com/help/matlab/matlab_external/calling-lapack-and-blas-functions-from-mex-...

2일 ago | 0

| accepted

Answered
TITLE: How to dynamically determine the name of the variable to be called in the function
I do not get the point. "excel file with data-series in EXACT order of countries (Y_aa Y_bb, Y_cc., i.e.: aa bb cc.." Whe...

2일 ago | 0

Answered
Removing data from a structure that is less than a certain threshold
The iterative growing and shrinking of arrays is extremely expensive. Better: nTraj = numel(AllTraj.Passive); remove = false(...

3일 ago | 1

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Answered
Accessing data within a structure
The chosen data structure demands for loops. There is no "efficient" solution, which extracts the fields in a vectorized way. Yo...

3일 ago | 0

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Answered
Acessing imrect with another callback
It is a bad idea to set the AppData of the root object. This has the sme disadvantages as global variables. The complete communi...

3일 ago | 0

Answered
why my plot not being displayed?
Try plot(x, y, 'o') to check, if x and/or y are scalars, which plot infinitesimal small dots only.

3일 ago | 0

Answered
Angle between 2 3D straight lines
A = [3,7,9]; B = [4,5,8]; C = [4,5,0]; S1 = B - A; S2 = C - A; Theta = atan2(norm(cross(S1, S2)), dot(S1, S2)); W. Kah...

3일 ago | 1

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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...

4일 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...

4일 ago | 2

| accepted

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...

4일 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...

4일 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...

4일 ago | 32

| accepted

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...

8일 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]

8일 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...

8일 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...

10일 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. ...

10일 ago | 0

| accepted

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...

10일 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...

10일 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 ...

10일 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...

10일 ago | 0

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

10일 ago | 0

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