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# Jan

Last seen: Today Actif depuis 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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How to find the longest distance normal to line from the dataplot?
If you rotate the X and Y coordinates of the graph such that the connection between start and end point is parallel the X axis, ...

37 minutes il y a | 0

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Automating length with reshaping, and using reshape to loop through data.
See reshape - simply use [] for the free dimension to be adjusted automatically: tt = reshape(t, 3, []).' Note: While ' is the...

1 jour il y a | 0

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error described on the command window does not appear on code analyzer
The code analyzer shows typing errors and other static problems. The error message you get is a run-time problem, which occurs ...

2 jours il y a | 0

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Error in running the code
dlmread cannot handle the double quotes around the numbers. Use modern import functions instead, e.g. readmatrix(). The option '...

2 jours il y a | 0

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I have a string with 10 variables created using randi, between 0 and 1, in the last 5 variables (i.e 5-10 variables) i want maximum 2 places with 1 only (eg:- 1011101001).
nVar = 10; last = 5; a = randi([0, 1], 1, nVar - last); b = zeros(1, last); n = randi([0, 2]); % 0, 1 or 2 b(rand...

3 jours il y a | 0

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How to simplify too much of if
Change: if (0<S)&&(S<=10) if AggS==10 if fap==40 if fwcr==0.5 fp=39; e...

3 jours il y a | 0

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How to store values in matrix form for differn iteration
A = [6 3 4 5 2 7 1]; Collected = zeros(500, 7); for k = 1:500 A = rem(A + randi([0, 100], 1, 7), 10); % A random test fu...

3 jours il y a | 1

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How to find number of bit change between binary numbers?
Step 1: Convert your input to a typical binary representation as a numerical vector [1,1,0] or char vector '110'. Step 2: XOR ...

3 jours il y a | 1

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Find doesn't seem to work with Matrix larger than 127x127
This observation does not match the facts: X = randi([0, 1], 150, 150); [i,j] = find(X); max(i) max(j) If you observe a ver...

4 jours il y a | 0

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interp2 from 6x6 map to 500x500 map
Of course, 1*(0:1/N_mesh:1) has N_mesh+1 points. "But the image is not centered at the extremes..." - What does this mean? By ...

4 jours il y a | 1

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Get special variable out of every struct in workspace
This is a bad coding design. Creating a bunch of variables causes much troubles. See here for an exhaustive discussion: https://...

6 jours il y a | 1

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How to write this fuction in Matlab? I have an example code in Python
Assuming that b_1, b_2, r_1, r_2 are constants: % As anonymous function: r_1 = rand; % Define the constants r_2 = rand; b_1...

7 jours il y a | 1

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Why does my uicontextmenu only show after a pause/breakpoint?
Try to replace pause by drawnow. This allows the GUI to activate the updated properties. If this is working also, this is the ex...

8 jours il y a | 0

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Why do i get error when i reupload the GUI that i deleted before.
The solution is explained in the message clearly already: "Contact the File exchage If you want to upload the file again". Searc...

10 jours il y a | 0

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how to add header for new output file?
You want to copy the header? Read the first 15 lines and write it: [fid, msg] = fopen(file_paths{i}, 'r'); assert(fid > 0, msg...

10 jours il y a | 0

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i want the loop to run only one time, it keeps running until it subtract 84 instead of 6
Remember that length(A) replies the longest dimension. Maybe you meant height(A). Even if this replies the same value for the ex...

12 jours il y a | 0

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Unexpected high memory usage in MATLAB.
Avoid clear all, because it has no benefits. It removes all loaded functions from the RAM and reloads them from the slow disk th...

12 jours il y a | 1

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Escaped character '\U' is not valid. See 'doc sprintf' for supported special support.
It is a typical bug under Windows, which does not occur, when the software is tested successfully in Linux: fprintf(['Current f...

12 jours il y a | 0

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Detect if user has a valid MatLab license
The detection is not trivial. A matching license file might be there, but the license can be expired. The computer or license se...

13 jours il y a | 0

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Generating 60 random samples that sum to 1, each subject to a unique lower and upper limit
Isn't this a job for: https://www.mathworks.com/matlabcentral/fileexchange/9700-random-vectors-with-fixed-sum ? % [x,v] = randf...

13 jours il y a | 0

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checking if field values in a single struct are identical
Depending on how the inputs look exactly, maybe: FieldC = struct2cell(S); Eq = true; for k = 2:numel(FieldC) if ~isequal...

13 jours il y a | 0

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Trying to extract data trail by trail, but my data is sampled at different sampling rate.
If one signal is measured with 1000 Hz and another with 2000 Hz, it is trivial to determine timepoints of the first one in the t...

14 jours il y a | 0

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How not repeat the main loop, if other options are selected?
The description is not really clear. I assume, you want a list of menus to be selected one after the other. Then: status = 0; ...

15 jours il y a | 0

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How can I generate the Radom number between two set of floating point number?
Gain0 = 0.0000250002787160545; Bias0 = -0.124315307973192; Gain = Gain0 + Gain0 * 0.18 * (rand(1, 160) - 0.5); Bias = Bias0...

15 jours il y a | 0

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How do I properly convert a 64-bit binary string / Convert directly from bin or hex to uint64
The question explains with many details, where the numbers are coming from. It would be more useful to post a set aof available ...

15 jours il y a | 0

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Fast computation of entries of large matrix
n = 2500; x1=rand(n, 5); % some matrix with high number of rows and small number of columns > 1 x2=rand(n, 5); % anoth...

15 jours il y a | 0

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2nd order euler method problem
You have to convert the 2nd order equation to a system of order 1 at first. Accumulating dx2/dt2 is not meaingful. The 2nd deri...

15 jours il y a | 0

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I tried dragging an image into the edit box for an answer on Matlab Central and doing so destroyed my answer.
Yes, I can confirm this behavior. For Firefox/Windows: When I drag an image into the field for editing (or anywhere else on th...

16 jours il y a | 0

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Renaming multiple files in a folder
Folder = 'C:\Your\Folder'; FileList = dir(fullfile(Folder), 'Antenna_REF_*.s2p'); for k = 1:numel(FileList) oldName = Fi...

16 jours il y a | 1