Community Profile # Jan

Last seen: Today 2009 以来アクティブ

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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Index exceeds the number of array elements. Index must not exceed 2.
for i=3:n y_m(i)=y_m(i-2)+2.*h.*f_m(i-1); % <-- This is line 16 f_m(i)=20.*(y_m(i)-cos(t(i)))-sin(t(i)); % ...

matlab function to find a similar signal in data
Do you want to get something like this: x = rand(1, 10000); y = x(300:400) + (rand(1, 101) -0.5) * 0.01; % A small part with ...

For loop for Sine wave function
The warning is solved is solved by a pre-allocation. Insert before the loop: T = 5; ´ % size of window fs = 44100;...

Operate on 3d matrix based on 2d logical
A = rand(10000, 60, 60); B = rand(60, 60) < 0.5; % logical AA = reshape(A, 10000, 360); C = AA(:, B) * 3; Afterwards y...

json encode/decode
Does the encode of Matlab's production server help? a = [1,2,3] j1 = jsonencode(a) a1 = jsondecode(j1) j2 = mps.json.encode(...

How can I export data set from Matlab to excel ?
The maximum number of rows in Excel is 1'048'576, while it can work with 16'384 columns. This means, that you cannot store vecto...

have array entries filled depending on their indices?
The code is strange, because all elements of A are 0 except for the first one. B(1) is zero, so prod(B(1:n)) is zeros also. Mayb...

How can i read images for filtering using if else condition in GUI?
imfilter operates on the pixel values of an image. See: imfilter . There is no "parent" property, so simply omit this: % XG1 = ...

for loop is endless
ST1 = zeros(1, 10000); % Pre-allocate for k = 1:10000 ST1(k) = sadj * exp(r-0.5*(vol^2)) * T + vol * sqrt(T) * randn(k); ...

1日 前 | 0

Solution Codes of Ordinary Diferenatial Equation
What is the purpose of the outer loop "for p=1:k"? Why does the inner loop "for n=0:p-2" run from 0 to p-2? It is confusing tha...

2日 前 | 0

Problems accessing files from code after moving a matlab project from uni pc to home
Do not call fopen without checking for errors: [fid, msg] = fopen(file, 'r'); assert(fid > 0, 'Cannot open file for reading: %...

2日 前 | 0

How to sort a dot indexed array by rows based on one column
[~, index] = sort([pop.F]); pop2 = pop(index);

2日 前 | 0

T = readtable('Population_data.xlsx'); population = T{:, 3};

3日 前 | 0

How can I create a plot with two different yaxis, with one of them inside the figure?
Simply create 2 axes: FigH = figure; Axes1H = axes(FigH, 'Position', [0.1300 0.1100 0.5 0.8150], ... 'Box', 'on'); ...

3日 前 | 0

Best way to initialize different parameters based on the machine in which I run the code
Matlab's setpref and getpref command is very useful also to store machine specific parameters. A drawback is, that these settin...

4日 前 | 0

i want to Write a user-defined function that calculate total marks, out of 100,The course should include homework, midterms, and final exam and i dont know why didint work
if (95 >= Gall) Read this loud: "If 95 is greater than Gall". No, you want the other way around: if Gall >= 95 The ...

4日 前 | 0

How to filter the following vector from multiple vectors?
Maybe: V = MM(:, abs(MM(2, :)) < 32); [~, index] = min(V(1, :)); W = V(:, index)

4日 前 | 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...

4日 前 | 0

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Two complex matrix can not to multiply by each other.

4日 前 | 0

Compare two string arrays with a if loop
A simpler formulation of your question might be: Datenbank = [ ... "Na,Pb" "Abellaite" ""; ... "...

4日 前 | 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...

4日 前 | 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 ...

5日 前 | 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...

5日 前 | 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...

5日 前 | 0

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

6日 前 | 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...

7日 前 | 1

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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...

7日 前 | 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...

7日 前 | 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...

7日 前 | 1

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How do I add numbers into a sequence
x = [1;10;30]; y = x.' + (0:9).'; y = y(:)

7日 前 | 0

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