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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
reduce values on a vector
You are overwriting the variable Surveillance_signal_samples repeatedly: for kk =1:nSurv Surveillance_signal_samples=Surve...

alrededor de 7 horas ago | 0

Answered
How to output a new matrix that swaps the position of the beginning and end of a separate matrix
latitude = zeros(1,18); longitude = zeros(1,43); for i=1:18 latitude(i) = 48+(i-1)*1; end for j=1:43 longitude(j)...

alrededor de 12 horas ago | 0

Answered
Newton to see when the Gradient = 0
In the line: xd=x+d; x is a [2x1] vector and d a [1x2] vector. The implicite expanding replies a [2 x 2] matrix. Maybe this f...

alrededor de 12 horas ago | 0

Answered
How to apply an IIR-Filter correctly on a PCM-Signal?
Yes, this filter reduces the power massively: data = load('handel.mat'); signal = data.y; b = [0.049922035 -0.09...

alrededor de 13 horas ago | 0

| accepted

Answered
Dimensions of arrays being concatenated are not consistent.
The message means, that you cannot concatente arrays horizontally, if they have a different number of rows. Or vertically, if th...

2 días ago | 0

Answered
Create cell array of handle functions, which have been created from 2x1 double arrays
a = [1; 2]; b = [3; 4]; f = cell(2, 1); for ff = 1:2 f{ff} = str2func(sprintf('@(t) %d * t + %d', a(ff), b(ff))); end f

3 días ago | 0

| accepted

Answered
changing the legend line style (":","-","--","-.") for 4 black lines in plot instead of using multip colour
figure; axes('NextPlot', 'add', ... 'LineStyleOrder', cellstr([":", "-", "--", "-."]), ... 'ColorOrder', zeros(1, 3))...

4 días ago | 0

Answered
Finding Sequences of 1's values
Some timings of the methods provided in this thread: x = randi([0, 1], 1, 80000); format long g disp(timeit(@() Jos(x))) d...

6 días ago | 0

Answered
unix/system comand Always print out some environment setting when using it
% Without semicolon: system('pwd') % With semicolon: system('pwd'); % With semicolon and catching outputs: [status, out] = ...

6 días ago | 0

Answered
Is there a reason why row vectors are default in Matlab?
Matlab was developped as "Matrix Laboratory". So the default type is a double matrix. If the focus has been set to vectors, it w...

6 días ago | 0

Answered
Translate file name in mapped drive to unc path filename
No, there is no Matlab command to perform this automatically. net use sovles this and WMIC can help also: [status, out] = syst...

7 días ago | 0

Answered
How to efficiently allocate memory using a parfor loop
ET = permute(E_mat, [2,3,1]); Q = zeros(size(ET)); parfor n = 1:size(E_mat, 3) Q(:,:,n) = sigmaE(n) / 2 / mass_density(n...

7 días ago | 1

| accepted

Answered
exportgraphics does not save at specific location
The folder is existing but Matlab cannot create a file in it. Then Matlab does not have write permissions in this folder. filea...

7 días ago | 0

Answered
merge many mat files in one big vector
Why do you overwrite the first part of PSD_Monat in each iteration? for k=1 PSD_Monat([1:k*f1],1)=d(:,1) %d([1:k*f1],1)...

7 días ago | 0

Answered
Is it possible to run Matlab Deep Learning Toolbox functions in Octave?
No. For 2 reasons: It is not 100% compatible (I'm sure!). The license conditions will not allow this. If you do have a license...

7 días ago | 1

| accepted

Answered
Min of each column of a sparse matrix?
For large inputs a loop is faster than accumarray: X = sprand(2000, 20000, 0.2); tic; for k = 1:10 [ii,jj] = find(X); ...

7 días ago | 0

Answered
simplify my script?
Move all repeated work out of the loops. In your case: % Load data ncfile = 'Temperature.nc'; months = {'January'...

8 días ago | 0

Answered
generate sine waves that appears after one another
figure; % Insert this: axes('NextPlot', 'add'); % Equivalent to: hold('on') ... Otherwise the plot() command clears it...

8 días ago | 0

Answered
Function not processing dat for each element in array
Remember, that Matlab's IF condition must be a scalar. If you provide n as a vector, the line: if n >= 50 implicitly perfo...

8 días ago | 1

Answered
Is there any equivalent keyword 'goto' in matlab not in simulink but in matlab coding
No, there is no GOTO in Matlab and it should be avoided strictly in good code. Maybe: function YourFunc n = 123; % ??? for ...

8 días ago | 0

| accepted

Answered
Storing output of function file in workspace
Nested nested functions - brrr. What about: t = 0.3:0.1:6; ? You store the variable Cfit in the workspace of the function Pa...

8 días ago | 0

Answered
Readmatrix in struct using parfor
Fields names cannot contain the charcater '#' . fld = sprintf('File_%d', i); Data.(fld) = readmatrix(Files2Read{i}); ...

8 días ago | 0

| accepted

Answered
Need some help with re-formating a text.file using MATLAB?
Actually all you want to do is to replace the string a = sprintf('''10''\n') % by b = sprintf('''10'' good ') and c = sp...

11 días ago | 0

Answered
how to make timer callback function?
app.something = 'hello'; tt = timer('Name','Test','Period',1, ... 'ExecutionMode','fixedSpacing','BusyMode','drop'); tt.Ti...

11 días ago | 0

| accepted

Answered
Load MatLab with Network License when Network is Unavailable
A network license is designed to work inside the specified network only. This is its nature. So you are asking for a break of th...

11 días ago | 0

Answered
is it possible to use "for loop" for matrix?
X1 = zeros(1,6); X2 = zeros(1,6); for k=1:6 for j=1:n X1(1,k)=(j^k)+X1(1,k); X2(1,k)=(j^k)+X2(1,k); ...

11 días ago | 1

| accepted

Answered
How to make 3 arrays (Test , Test2, Test3) that are of different lengths into one matrix?
A matrix is a rectangular list of elments. This means, that all rows must have the same number of elements. Either fill the sho...

11 días ago | 1

| accepted

Answered
how to use multiple 'for loop' for one function?
Please post the complete error message, if you mention an error. This message contains the information, in which line the proble...

11 días ago | 0

| accepted

Answered
Iterating inside an iteration loop, while loop
This is not a bug, but useful for efficient code: 10^(-4) is an expensive power operation while 1e-4 is a cheap constant. if Z...

11 días ago | 0

Answered
Compatibility of code when updating Matlab licence
See: https://www.mathworks.com/support/requirements/matlab-system-requirements.html R2021b supports Windows 7 SP1, while Win7 i...

11 días ago | 1

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