# Jan

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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**Content Feed**

How to filter the following vector from multiple vectors?

Maybe: V = MM(:, abs(MM(2, :)) < 32); [~, index] = min(V(1, :)); W = V(:, index)

environ 16 heures ago | 0

Within a script, can I close or redirect a Windows File Explorer window opened with 'winopen'?

You could open a tree view to the folder inside Matlab: [mtree, container] = uitree('v0', 'Root','C:\') % Still working? This...

environ 18 heures ago | 0

Two complex matrix can not to multiply by each other.

Try this: https://www.mathworks.com/matlabcentral/answers/1584284-the-problem-of-conv2-with-blas-loading-error

environ 19 heures ago | 0

Compare two string arrays with a if loop

A simpler formulation of your question might be: Datenbank = [ ... "Na,Pb" "Abellaite" ""; ... "...

environ 19 heures ago | 0

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Powell's Algorithm not obeying Upper Bound (UB)

Yes, this is the documented behavior: % Lb, Ub: lower and upper bound vectors to plot (default = x0*(1+/-2)) Lb and Ub are u...

environ 20 heures ago | 0

Function 'subsindex' is not defined for values of class 'cell'

What is the purpose of handles.edit1.String(TIP1) Here TIP1 = {'ITS A GREAT CAR'} is used as index of the variable replied by ...

1 jour ago | 0

When I run a specific MEX file I get the message: "Invalid MEX file: The specified module could not be found". The dependency_walker utility seems not to work.

Open the DependencyWalker with a double click. Then select the mex file manually. This should show the report after some seconds...

1 jour ago | 0

Why am I receiving the error message "Array indices must be positive integers or logical values"?

ch_i(exp(-(z/ch_i))) ch_o(exp(-(z/ch_o))-1) Here exp(-(z/ch_i)) and exp(-(z/ch_o))-1 are used as indices of the variables ch_i...

1 jour ago | 0

| accepted

I want to make an iteration for all arras of my vector.

n=ones(size(f_s)); ready = false; while ~ready nOld = n; ... Your code as above ready = all((n - nOld) < 0.01) ...

2 jours ago | 0

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Invalid RHS for assignment to a categorical array.

Group_Train1 is a [274x1] double vector. u contains its unique elements. result is an empty categorical. The error message mean...

3 jours ago | 1

| accepted

Error compiling third party plugin

"I navigated with Matlab to the libeep folder" - the provided command is not Matlab. Did you install XCode? Then open a command...

4 jours ago | 0

How to read audio file from file?

The error message tells clearly, that there is no file called 'D:\BİTİRME PROJESİ\TIMIT\data\TRAIN\DR2\FAEM0.SA1.wav' There i...

4 jours ago | 0

How to correct the code?

for k = 1:size(lambda) fun_lambda_value(k) = subs(f,[x1,x2],[x_1(i)+lambda(k,1)*S(1),x_2(i)+lambda(k,1)*S(2)]) end If lamd...

4 jours ago | 1

| accepted

How do I add numbers into a sequence

x = [1;10;30]; y = x.' + (0:9).'; y = y(:)

4 jours ago | 0

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PARFOR in real applications

After trying many examples from many questions in the forum, I've found: https://www.mathworks.com/matlabcentral/answers/172017...

4 jours ago | 0

Perform specific operations on arrays without "for" loop

You do not want less for loops, but more: Accesing the RAM is slower than using the CPU cache: function [chi,zeta,M,O,Delta,rho...

4 jours ago | 2

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I would like to know how I can find out how long a certain event lasts.

data = [ ... 0.019 0 0.04 0.45371 0.057 0 0.076 0.15127 0.092 0.22037 0.107 0.2317 0.1...

5 jours ago | 0

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what is this eror and what does it mean and how can i solve it ?

it says here that ('loop index 'i' is changed inside of a FOR loop) Yes, and this is the clear explanation already. Do not chan...

6 jours ago | 0

How can I add an extra dimension to make the array 2D to 3D?

Reduce the clutter: name = ''; if idx < 10 name = strcat('0',int2str(idx),'.mat'); load(name); else name = str...

6 jours ago | 1

| accepted

Trying to use central difference scheme to solve logistic equation

Your code is no valid Matlab code. I suggest to learn the basics from: https://www.mathworks.com/learn/tutorials/matlab-onramp.h...

7 jours ago | 0

| accepted

using matlab compiler to read a .mat file at run time

Consider, that pwd is fragile. Any subfunction might change the current directory. See here for a method to get the location o...

7 jours ago | 0

How can I write a fraction inside string?

What exactly is the problem? I've simply copied the string provided in the question, inserted a linebreak \n to let the comnplet...

7 jours ago | 0

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where can i get original Matlab code of an algorithm published in a research paper?

Ask the author of the paper. Sometimes they provide the code. Don't be surprised, if the code does not run on your computer. I'...

7 jours ago | 0

How to set even spacing between preset tick marks

What do you exactly want as output? Beside the possibility to do this in Matlab, think twice if the person can understand the o...

7 jours ago | 1

| accepted

Out of memory error message when attempting to plot in 3D

function dxdt = g(t,f) dxdt=g(t,f) ... end This function calls itself recursively. Of course this let Matlab crash. What is ...

7 jours ago | 0

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Un smoothing set of saved data

No. Smoothing destroys the signal of the noise. You cannot reconstruct it.

7 jours ago | 0

| accepted

Weird behavior of ODE45?

It is still not clear, what this means: "the initial condition 'uF' wasn't updated correctly" When I run your code, I do see th...

8 jours ago | 0

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How to set axes in a figure without displaying the figure

axes(ax1) activates the already created axes with the handle ax1. [EDITED] And it enables the visibility of the figure automatic...

8 jours ago | 0

problem in my programme

I guess, the problem is hidden here: function f=costf(a,b,c,x) ... f=sum(a.*x.^2+b.*x+c) ... out=fx+sum(penalty,2);...

9 jours ago | 0

how do i resolve this ode45 problem

Your expression contains unbalances parentheses: Vof=@(t) Vo(1+ceil(t.*fo.*(length(t)-1)); 4 opening ( but only 3 closing ). ...

9 jours ago | 0