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.
Statistics
Reach 25000 reputation points
Awarded to Jan on 14 Aug 2018
Answer 50 questions that were unanswered for more than 30 days
Awarded to Jan on 14 Aug 2017
Like a problem or solution
Awarded to Jan on 27 Jan 2012
Comment on a problem or solution
Awarded to Jan on 26 Jan 2012
Download any 10 unique submissions
Awarded to Jan on 01 Apr 2021
Your submissions were downloaded 250 or more times in a month
Awarded to Jan on 01 Nov 2019
Your submission is selected as "Pick of The Week"
Awarded to Jan on 09 Oct 2019
Publish your first review
Awarded to Jan on 09 Oct 2019
Your submissions received 25 five star ratings
Awarded to Jan on 09 Oct 2019
Publish your first submission
Awarded to Jan on 09 Oct 2019
Contribute at least one answer each month for 36 consecutive months
Awarded to Jan on 20 Jul 2017
Accept 50 answers given by other contributors
Awarded to Jan on 20 Jul 2017
Content Feed
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...
약 13시간 전 | 0
The Code gives error for romberg integration
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 -...
약 13시간 전 | 0
How to decompose 3d array to 3 matrices
x = rand(51, 71, 3); v = reshape(x(:, 27, :), [], 1); size(v)
1일 전 | 0
How to accelerate the permute for 3D matrix
You can't. permute works efficiently already.
1일 전 | 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...
1일 전 | 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...
1일 전 | 1
| 수락됨
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...
1일 전 | 1
| 수락됨
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...
1일 전 | 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 ...
3일 전 | 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...
3일 전 | 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 ...
3일 전 | 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 ...
3일 전 | 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...
4일 전 | 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...
4일 전 | 0
| 수락됨
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...
4일 전 | 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) ...
5일 전 | 0
| 수락됨
Get the time of the messages
Try: Time_Matching = Time_AIS1(msg_match{K}) % curly braces
5일 전 | 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...
5일 전 | 0
| 수락됨
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...
5일 전 | 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...
6일 전 | 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...
6일 전 | 0
| 수락됨
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); ...
6일 전 | 1
| 수락됨
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...
6일 전 | 0
| 수락됨
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, :); % ^
6일 전 | 1
| 수락됨
How to get rid of a loop that depends on its previous iterations
Start with calculating the average manually instead of the slower mean() function: % Timings: R2018b, Win10, i7 data0 = rand(1...
7일 전 | 0
| 수락됨
Solving problem with ODE45
In the loop you are calculating the integration from 0 to 2*t(i) with the initial value set to y2(i-1, :). But this is another i...
9일 전 | 0
Check for equality in the contents of two arrays ignoring order
unique, setdiff, union and ismember call the function sort also internally. So % assert(isequal(sort(A), sort(B))) Is a very e...
9일 전 | 0
How to identify duplicate values in an n dimensional array , then club the linked values related to it in another array
A = [ 1 8 10 4; ... 1 8 4 0]; T = isMultiple(A); B = A(T) % ? or what do you want? A(T) = 0; functi...
10일 전 | 0
