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.

Answered

Find string in the special file

S = fileread('R2_AS - Copy.txt'); i1 = [strfind(S, 'Szenario'), Inf]; i2 = strfind(S, 'has been created.'); width = numel(...

Find string in the special file

S = fileread('R2_AS - Copy.txt'); i1 = [strfind(S, 'Szenario'), Inf]; i2 = strfind(S, 'has been created.'); width = numel(...

13 days ago | 0

Answered

Namelengthmax value in different operating systems

The value of namelengthmax depends on the Matlab version only. It is the same for all operating systems. Identifiers can have ...

Namelengthmax value in different operating systems

The value of namelengthmax depends on the Matlab version only. It is the same for all operating systems. Identifiers can have ...

13 days ago | 0

Answered

Syntax Error using Fcn Block

You need round parentheses for indexing, not square brackets: (1/Mus)*(Ks*(u[3]-u[4])+Ct*(u([7]-u[2])+Kt*(u[6]-u[4])-u[5]) % =...

Syntax Error using Fcn Block

You need round parentheses for indexing, not square brackets: (1/Mus)*(Ks*(u[3]-u[4])+Ct*(u([7]-u[2])+Kt*(u[6]-u[4])-u[5]) % =...

13 days ago | 0

| accepted

Answered

how to compute the number of image from subfolder ?

fullfile(('.\databasee\')) is exactly the same as its input: '.\databasee\'. The unnecessary parentheses are confusing only. To...

how to compute the number of image from subfolder ?

fullfile(('.\databasee\')) is exactly the same as its input: '.\databasee\'. The unnecessary parentheses are confusing only. To...

13 days ago | 1

| accepted

Answered

Different machine precision for scalars and vectors?

The only difference is the display in the command window. Matlab tries to display vectors in an abbreviated format, execpt if yo...

Different machine precision for scalars and vectors?

The only difference is the display in the command window. Matlab tries to display vectors in an abbreviated format, execpt if yo...

20 days ago | 1

| accepted

Answered

Strange behavior of the editor in the forum

1.5 years later. I tried it again. I still cannot set a flag, delete an answer or insert an image or link. Whenever I try it, t...

Strange behavior of the editor in the forum

1.5 years later. I tried it again. I still cannot set a flag, delete an answer or insert an image or link. Whenever I try it, t...

21 days ago | 2

Answered

Combining 2 codes to make a number counter with user input

function v = Sample() Loop = true; Count = 0; v = []; while Loop a = input('Please input a number: '); if a >= ...

Combining 2 codes to make a number counter with user input

function v = Sample() Loop = true; Count = 0; v = []; while Loop a = input('Please input a number: '); if a >= ...

26 days ago | 0

Answered

regarding 'FOR LOOP' use to plot discrete impulse response

The question is not clear yet. Do you mean: delay = repmat(1, 1, 500); amplitiudes = repmat(0.1, 1, 500); % Alternati...

regarding 'FOR LOOP' use to plot discrete impulse response

The question is not clear yet. Do you mean: delay = repmat(1, 1, 500); amplitiudes = repmat(0.1, 1, 500); % Alternati...

26 days ago | 0

Answered

How can write loop for this algorithm?

I'm not sure, because the question is not completely clear to me. Perhaps: A = [1 1 2 2 3 3 3 4 4 8 9 10]; d = diff(A); v = f...

How can write loop for this algorithm?

I'm not sure, because the question is not completely clear to me. Perhaps: A = [1 1 2 2 3 3 3 4 4 8 9 10]; d = diff(A); v = f...

26 days ago | 0

Answered

counting number of textbox or patches in a matlab figure

% All text boxes: List1 = findall(HandleOfFigure, 'Type', 'uicontrol', 'Style', 'text') Count1 = numel(List1) % All patche...

counting number of textbox or patches in a matlab figure

% All text boxes: List1 = findall(HandleOfFigure, 'Type', 'uicontrol', 'Style', 'text') Count1 = numel(List1) % All patche...

26 days ago | 0

Answered

mlock not working, variables getting cleared in function switch.

Create this file: function demo(In) persistent v switch lower(In) case 'lock' mlock disp('locked'...

mlock not working, variables getting cleared in function switch.

Create this file: function demo(In) persistent v switch lower(In) case 'lock' mlock disp('locked'...

26 days ago | 0

Answered

nested k for loops for a parameter k

Start with simplyfying your code: Replace the 2 innermost loops: s = 0; for u1=1:2 for u2=1:2 s = s + t1(u1,v1,w1)*...

nested k for loops for a parameter k

Start with simplyfying your code: Replace the 2 innermost loops: s = 0; for u1=1:2 for u2=1:2 s = s + t1(u1,v1,w1)*...

28 days ago | 1

| accepted

Answered

Adding Two Arrays Alternatively to make Third Array

% Arbitrary test data: ForceX = rand(64, 1) + 1i * rand(64, 1); ForceY = rand(64, 1) + 1i * rand(64, 1); % Methode 1: Forc...

Adding Two Arrays Alternatively to make Third Array

% Arbitrary test data: ForceX = rand(64, 1) + 1i * rand(64, 1); ForceY = rand(64, 1) + 1i * rand(64, 1); % Methode 1: Forc...

28 days ago | 0

Answered

how to string scalar or character vector a text

You need Matlab R2018b to define stringe with double quotes. The screen shot looks like R2018a. Then use single quotes to create...

how to string scalar or character vector a text

You need Matlab R2018b to define stringe with double quotes. The screen shot looks like R2018a. Then use single quotes to create...

1 month ago | 0

Answered

why elseif (i==1) && j==m condition went unexecuted?

The condition "i==1 && j==m" appears twice: if i==1 && j==m % First time A(1,1)=1; elseif (i==...

why elseif (i==1) && j==m condition went unexecuted?

The condition "i==1 && j==m" appears twice: if i==1 && j==m % First time A(1,1)=1; elseif (i==...

1 month ago | 0

| accepted

Answered

Why Matlab does not read the input value?

This piece of code is called repeatedly. This shown code seems to be fine, so the behavior is caused the code, which calls this ...

Why Matlab does not read the input value?

This piece of code is called repeatedly. This shown code seems to be fine, so the behavior is caused the code, which calls this ...

1 month ago | 0

Answered

uiopen vs audioread, is there an advantage to one over the other for .wav files?

The function uiopen and audioread have two different jobs. While the first opens Matlab files with the apropriate application, t...

uiopen vs audioread, is there an advantage to one over the other for .wav files?

The function uiopen and audioread have two different jobs. While the first opens Matlab files with the apropriate application, t...

2 months ago | 0

Answered

Can't run an external program with arguments

Under Windows the folders in the PATH a separated by semicolons, not colons. Do you mean: cmdStr3 = 'set path=%path%C:\Program ...

Can't run an external program with arguments

Under Windows the folders in the PATH a separated by semicolons, not colons. Do you mean: cmdStr3 = 'set path=%path%C:\Program ...

2 months ago | 0

Answered

Slow SizeChangedFcn or ResizeFcn

The first version was not sufficient in all cases. In addition it is required to prevent a repeated entering of the code: funct...

Slow SizeChangedFcn or ResizeFcn

The first version was not sufficient in all cases. In addition it is required to prevent a repeated entering of the code: funct...

2 months ago | 0

Answered

Slow SizeChangedFcn or ResizeFcn

One solution is to ignore the built-in resize methods and use a specific WindowsButtonDownFcn to emulate a resizing. But reinven...

Slow SizeChangedFcn or ResizeFcn

One solution is to ignore the built-in resize methods and use a specific WindowsButtonDownFcn to emulate a resizing. But reinven...

2 months ago | 0

Answered

Is it possible to programmatically check whether MATLAB has been started with the "-nodisplay" option?

See also: https://www.mathworks.com/matlabcentral/answers/407059-if-matlab-desktop-elseif-matlab-nodesktop : usejava('desktop')...

Is it possible to programmatically check whether MATLAB has been started with the "-nodisplay" option?

See also: https://www.mathworks.com/matlabcentral/answers/407059-if-matlab-desktop-elseif-matlab-nodesktop : usejava('desktop')...

2 months ago | 1

Question

Slow SizeChangedFcn or ResizeFcn

When a SizeChangedFcn or ResizeFcn takes some time, the figure size can be changed, until the display is updated. Example: func...

2 months ago | 2 answers | 0

Answered

Vector between vectors in intervals

Remark: The inputs vectors are not normalized and only almost orthogonal: format long g v1 = [-0.0345; 0.9984; -0.0447] v2 ...

Vector between vectors in intervals

Remark: The inputs vectors are not normalized and only almost orthogonal: format long g v1 = [-0.0345; 0.9984; -0.0447] v2 ...

10 months ago | 0

Answered

Can anyone help me with the "Axis rotation sequence for the Euler angles"

The rotation matrix for the Euler angles in the order XYX is: s1 = sin(alpha); c1 = cos(alpha); s2 = sin(beta); c2 = cos(bet...

Can anyone help me with the "Axis rotation sequence for the Euler angles"

The rotation matrix for the Euler angles in the order XYX is: s1 = sin(alpha); c1 = cos(alpha); s2 = sin(beta); c2 = cos(bet...

10 months ago | 1

Answered

Matlab has encountered an internal problem and needs to close.

The message teels you: If this problem is reproducible, please submit a Service Request via: http://www.mathworks.com/...

Matlab has encountered an internal problem and needs to close.

The message teels you: If this problem is reproducible, please submit a Service Request via: http://www.mathworks.com/...

10 months ago | 0

Answered

Use the time step within ode15s

If the function to be integrated requires the time steps of the solver, something went wrong. I'm convinced that this is a logic...

Use the time step within ode15s

If the function to be integrated requires the time steps of the solver, something went wrong. I'm convinced that this is a logic...

10 months ago | 0

| accepted

Answered

Keep getting error message on my ODE function

u0 = [P0, zeros(1, N + 1)];

Keep getting error message on my ODE function

u0 = [P0, zeros(1, N + 1)];

10 months ago | 0

| accepted

Answered

Eulers method for system of linear equations

h = 0,1; % ^ you mean 0.1 with a dot There is no need to create the accleration as array. Reply a scalar instead: funct...

Eulers method for system of linear equations

h = 0,1; % ^ you mean 0.1 with a dot There is no need to create the accleration as array. Reply a scalar instead: funct...

10 months ago | 0

Answered

Skipping files in a set

What does "files 132, 290, and 404" mean? Are these the indices in rightfiles, or are these parts of the file name? rightfiles=...

Skipping files in a set

What does "files 132, 290, and 404" mean? Are these the indices in rightfiles, or are these parts of the file name? rightfiles=...

10 months ago | 0