# 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**

I'm not able to read audio file >4GB

If you can store a 5GB file on the disk, the disk cannot be formated in FAT32. This means, that the limit is caused by the file ...

environ 3 heures ago | 0

Calculate delta time in seconds

Starttime = "28-Jun-2021 05:05:38"; Stoptime = "28-Jun-2021 05:15:38"; Deltatime = compose("%d", seconds(datetime(Stoptime) -...

environ 3 heures ago | 1

Merging rows of a matrix into a number

C = [345 679 158]; D = rem(floor(C ./ [100, 10, 1]), 10)

environ 20 heures ago | 1

Problem with subplot ful screen

Yes, of course. You are creating a 10x2 table of plots: subplot(10,2,1) % ^^ Use subplot(5, 2, k) for a 5x2 table.

environ 20 heures ago | 0

Functions name duplication in toolbox

What about using builtin('kmeans') to call the Matlab version? [EDITED: This does not work. Thanks, Steven Lord] Did you add yo...

environ 20 heures ago | 0

How do I get r2016a?

I'm not sure if this shortcut is working for you: https://www.mathworks.com/downloads/ If not, open "May Account" on your prof...

2 jours ago | 0

Code for romberg integration using recursion

The posted code runs without an error in R2021b. eps_step = 1e-5; N = 11; a = 0; b = 1; R = zeros( N + 1, N + 1 ); h = b -...

2 jours ago | 0

How to decompose 3d array to 3 matrices

x = rand(51, 71, 3); v = reshape(x(:, 27, :), [], 1); size(v)

3 jours ago | 0

How to accelerate the permute for 3D matrix

You can't. permute works efficiently already.

3 jours ago | 0

How to download data using proper link

FileName = 'prov.postprocess+sMpAn+dMOD08_M3_6_1_Deep_Blue_Aerosol_Optical_Depth_550_Land_Mean_Mean+zNA+t20010101000000_20201231...

3 jours ago | 0

Generate a matrix of combinations without repetition (array exceeds maximum array size preference)

Instead of permuting [0,0,1,1] and removing the duplicates, you can obtain the list of indices of the ones (or zeros): M1 = uni...

3 jours ago | 1

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Infinite looping: Knowing its presence in a big program?

See: https://en.wikipedia.org/wiki/Halting_problem You can prove, that there are no "tricks" to determine securely in advance i...

3 jours ago | 1

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Run two scripts simultaneously matlab

The easiest way is to start 2 Matlab sessions.

3 jours ago | 0

Sorting cell for only dublicate values

Is the input really a cell containging strings? Or a cell string? Ort a string array? % Test data with a cell string: data = s...

3 jours ago | 1

Divided difference(Newton metod)

There was a missing closing parenthesis. The trailing esmivolon suppresses the output. If you omit it, this is displayed: test ...

4 jours ago | 0

why is my vector empty

for i=1:size(A,1) disp(double(A{i})) end i = size(A,1) now. Then: row_=(double(A{i})); Is a vector of the ASCII values o...

5 jours ago | 0

Add a textbox in a subplots inside a loop

Move the repeated code out of the loop to simplify the code: z = [0.44, 4.7, 7, 8, 17.9, 31, 57]; dim = [.2 .5 .3 .3]; c ...

5 jours ago | 0

Why does mldivide solve equations so fast that FORTRAN can't compare it？

Matlab's code for the matrix division is not made public. Internally optimized BLAS libraries and MKL are used. The taskmanager ...

5 jours ago | 0

Converting a binary matrix to decimal.

The error message is clear: bin2dec requires a CHAR vector as input or a cell string. See: doc bin2dec You provide a numerical...

5 jours ago | 1

Error in Bvp4c

You define the variable beta on top of the code, but this does not mean, that it is known in all subfunctions. Pr, gamma and lam...

5 jours ago | 0

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How to normalize a matrix in such a wat that every row sum of X(:,:,i) should be 1 except for ith row

X = rand(6, 3, 6); N = sum(X, 2); N(sub2ind(size(N), 1:6, ones(1,6), 1:6)) = 1; Y = X ./ N; Now sum(Y(i, :, j)) is 1 is i~=j...

5 jours ago | 0

Faster for loops/or how to cut some time

a=randn(50,1); b=randn(50,1); tic [aa,bb]=using_cells2(a,b); eloopC=length(aa); eloopP=length(bb); for i=1:(eloopC) ...

6 jours ago | 0

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Get the time of the messages

Try: Time_Matching = Time_AIS1(msg_match{K}) % curly braces

6 jours ago | 0

find maximum number in a range of data

In max(T(S1,6)) you are searching in the submatrix T(S1, :). But you use the result as index in the full matrix T. You want to a...

6 jours ago | 0

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How do i plot equal size of circle in square(100*100 m^2) without overlapping?

This is an extremly challeging task. See https://en.wikipedia.org/wiki/Circle_packing https://en.wikipedia.org/wiki/Circle_pac...

6 jours ago | 1

cannot calculate mean on for loop

The elements of neg_m are overwritten repeatedly in the inner loop. Maybe you want: for ni = 1:35 neg_m(ni, :) = mean(resh...

7 jours ago | 0

How to make the negative sign in the legend easier to see?

strcat removes interior spaces. This is not useful here and it is not in general. I consider this as a design error. Use cat in...

8 jours ago | 0

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Index exceeds the number of array elements (1)

Replace for j = 1:n-1 by for j = 1:i-1 By the way, you can write s = 0; for j = 1:i - 1 s = s + U(i, j) * x(j); ...

8 jours ago | 1

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How can I create three different axis?

See e.g.: https://www.mathworks.com/matlabcentral/fileexchange/67349-plot-with-multiple-y-axes https://www.mathworks.com/matl...

8 jours ago | 0

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How to shuffle two matrices in a consistent manner

I assume, X is a matrix and you want to shuffle the rows. Then: X = X(P, :); % ^

8 jours ago | 1

| accepted