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Jan


Last seen: Today Active 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
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 ...

ongeveer 5 uur ago | 0

Answered
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) -...

ongeveer 5 uur ago | 1

Answered
Merging rows of a matrix into a number
C = [345 679 158]; D = rem(floor(C ./ [100, 10, 1]), 10)

ongeveer 23 uur ago | 1

Answered
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.

ongeveer 23 uur ago | 0

Answered
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...

ongeveer 23 uur ago | 0

Answered
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 dagen ago | 0

Answered
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 dagen ago | 0

Answered
How to decompose 3d array to 3 matrices
x = rand(51, 71, 3); v = reshape(x(:, 27, :), [], 1); size(v)

3 dagen ago | 0

Answered
How to accelerate the permute for 3D matrix
You can't. permute works efficiently already.

3 dagen ago | 0

Answered
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 dagen ago | 0

Answered
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 dagen ago | 1

| accepted

Answered
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 dagen ago | 1

| accepted

Answered
Run two scripts simultaneously matlab
The easiest way is to start 2 Matlab sessions.

3 dagen ago | 0

Answered
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 dagen ago | 1

Answered
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 dagen ago | 0

Answered
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 dagen ago | 0

Answered
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 dagen ago | 0

Answered
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 dagen ago | 0

Answered
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 dagen ago | 1

Answered
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 dagen ago | 0

| accepted

Answered
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 dagen ago | 0

Answered
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 dagen ago | 0

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Answered
Get the time of the messages
Try: Time_Matching = Time_AIS1(msg_match{K}) % curly braces

6 dagen ago | 0

Answered
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 dagen ago | 0

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Answered
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 dagen ago | 1

Answered
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 dagen ago | 0

Answered
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 dagen ago | 0

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Answered
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 dagen ago | 1

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Answered
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 dagen ago | 0

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Answered
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 dagen ago | 1

| accepted

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