# 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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convert 1x20 double struct into a vector containing 20 values

With wild guessing: S.y = rand(1, 20); % Is this equivalent to your struct? plot(S.y); % Is this the way your get a ...

1 giorno fa | 0

load a large text file and split it after a specific character

S = readlines('YourFile.txt'); ind = [find(startsWith(S, '$')); numel(S) + 1]; % [EDITED, readlines reply column vector] n ...

1 giorno fa | 0

How to break data in to groups using while loop?

matrix = [1 50 60 70 50 40; ... 2 NaN 10 20 10 10; ... 3 NaN 20 NaN NaN NaN; ... 1 NaN 60 30 40...

1 giorno fa | 0

Attempt to grow array along ambiguous dimension. it happens when N,M are smaller then the total of A,B. can I make my code work for any value of N,M? if so how would I do that

Some simplifications: Use numel(C) instead of length(C(:)). C(1:end) is exactly the same as C. The values to not matter the ...

1 giorno fa | 1

my code keeps looping indefinitely and I could not figure out why, please help

No, the loops do run run infinitely. They are only slow. Check this with displaying a loop counter. Use the profile to find the...

1 giorno fa | 0

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Is it possible to display text in the console using latex expressions ?

LaTeX is not an option in the command window. Using Unicode characters works for some fonts, but fails with other font. The res...

1 giorno fa | 0

how do i join cell array strings for plotting

Dicide to use a better input format. Either a cell string: C = {'abc\_111', 'def\_111', 'ghi\_111'; ... 'abc\_123', 'abc\...

1 giorno fa | 0

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, ...

1 giorno fa | 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...

2 giorni fa | 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 ...

3 giorni fa | 0

how do i create a signal which is reset to zero every time the input signal increases of 1?

signal2 = diff(signal) == 1;

3 giorni fa | 1

Error in running the code

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

3 giorni fa | 0

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...

4 giorni fa | 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...

4 giorni fa | 0

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...

4 giorni fa | 1

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 ...

4 giorni fa | 1

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...

5 giorni fa | 0

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 ...

5 giorni fa | 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://...

7 giorni fa | 1

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...

8 giorni fa | 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...

9 giorni fa | 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...

11 giorni fa | 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...

11 giorni fa | 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...

13 giorni fa | 0

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...

13 giorni fa | 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...

13 giorni fa | 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...

14 giorni fa | 0

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...

14 giorni fa | 0

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...

14 giorni fa | 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...

15 giorni fa | 0