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Arithmetic coding and Huffman
https://www.mathworks.com/help/comm/ref/arithenco.html https://www.mathworks.com/help/comm/ref/huffmanenco.html Man further c...

fast 5 Jahre vor | 0

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Calculation of the average of 80X80 blocks of 800X1280 Excel sheet data
Import the data. Then you have a [800 x 1280] matrix. It does not matter, if the data have been stored in an Excel file. Then: ...

fast 5 Jahre vor | 0

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Build array from for loop
n = 100; c = cell(1, n); for k = 1:n c{k} = rand(1, randi(10)); end result = cat(2, c{:}); This avoids an iteratively g...

fast 5 Jahre vor | 0

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Nested struct arrays with variable format
You can't. S = struct('Name1', cell(n1, 1), ... 'Name2', cell(n1, 1)) his creates a [n1 x 1] struct array with two...

fast 5 Jahre vor | 0

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Beantwortet
finding divisibility in every number from 1 to 25
If x can by divided by y: rem(x, y) == 0 Or: x / y == round(x / y) Another apporach is to calculate the list of multiples of...

fast 5 Jahre vor | 0

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Central difference method or Diff for trajectories?
There are different methods for numerical differentiation. Assume you have the positions store in x and the times in t. Then: F...

fast 5 Jahre vor | 1

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Find equal pentagonal and square number
And a two-liner: n = 1:10000; find(any(((3*n.^2 - n)/2) == (n.^2).')) Matlab can be very elegant. Do you understand the detai...

fast 5 Jahre vor | 0

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Find equal pentagonal and square number
This sounds like a homework question. Then the standard way is that you post, what you have tried so fas and ask a specific ques...

fast 5 Jahre vor | 0

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for loop stack the data
Maybe: col = cell(1, 176); row = cell(1, 176); for k = 77:176 [col{k}, row{k}] = find(M == k); end

fast 5 Jahre vor | 0

Beantwortet
how can i solve the error Reference to non-existent folder
I guess, that the code is not: ficheiro = fullfile(files(5), files(5).name); % but: ficheiro = fullfile(files(5).folder, file...

fast 5 Jahre vor | 0

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calculating combinations of two vectors simultanously?
a = [1, 3, 5, 7, 9]; b = [2, 4, 6, 8, 10]; index = nchoosek(1:numel(a), 3); a(index) b(index)

fast 5 Jahre vor | 0

Beantwortet
Converting 1 and 2 to False and True
result = [1; 2; 1; 1; 2]; Pool = {'FALSE', 'TRUE'}; Pool((result == 1) + 1)

fast 5 Jahre vor | 0

Beantwortet
Creating a counter inside the ode45 function
This is not useful. ODE45 has a stepsize controller, which rejectes steps if they do not match the tolerances. This means, that ...

fast 5 Jahre vor | 0

Beantwortet
Failed to convert character code error
See: https://www.mathworks.com/matlabcentral/answers/561905-error-with-new-version-of-readtable-r2020a This is a limitation of ...

fast 5 Jahre vor | 0

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The most efficient way to do multiple summation in Matlab?
After the code runs in half a minute now instead of a couple of days, it is time to examine the numerical stability: for i3 = 0...

fast 5 Jahre vor | 0

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The most efficient way to do multiple summation in Matlab?
% Timings on: Matlab R2018b, Win10, i7: tic % A small k for bearable run times at first: YourSum_ori...

fast 5 Jahre vor | 0

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Is there a better way to use cellfun with arguments? and is it better than for-loop?
sizes = cellfun('size', cellArr, 1); Using the CHAR vector arguments is mentioned in the documentation as "backward compatibili...

fast 5 Jahre vor | 1

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Beantwortet
Strange result of find function
% Time_indices = find(abs([files(index).data.time]-t')< eps); % ^ If t and [...

fast 5 Jahre vor | 0

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Replacing for loop in the function
Does f() accept a row vector as input? Does it reply a row vector or matrix then? If so: function I = func(f, a, b, n) h = (b ...

fast 5 Jahre vor | 1

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How to convert .java file to .mat file?
.java files contain source code in Java. .mat files are data files read by Matlab. It is not meaningful to convert source code t...

fast 5 Jahre vor | 0

Beantwortet
I am getting Datenum failed error
There is a difference. You do not tell, which difference it is, because you are not aware of what it is. The readers in the foru...

fast 5 Jahre vor | 0

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in this code for solving ODE using ode45, I am having problem with 'inline' function. Which function can be used instead of it?? Kindly guide me about it..
Do not use clear all inside a function. A good idea would be to avoid this brute clearing in general. But here it is really usel...

fast 5 Jahre vor | 1

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timer with text and sound ?
pause(60); for k = 1:20 disp('Tap'); pause(10) disp('Rest'); pause(20); end The sleep command of java has...

fast 5 Jahre vor | 0

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Run function on all subfolders and save as separate structs
You are looking for txt files? Then: Mainfolder = 'D:\testnumber1\'; FileList = dir(fullfile(Mainfolder, '**', '*.txt')); %...

fast 5 Jahre vor | 0

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Logic in fibonacci series
Do you know Matlab's debugger? Store the function in a script and open it in the editor. Then set a breakpoint on the left side....

fast 5 Jahre vor | 1

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What's the quickest way to find frequency of a signal?
See: https://www.mathworks.com/matlabcentral/answers/160059-finding-the-frequency-value-of-a-signal

fast 5 Jahre vor | 0

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How to write conditional statement/loop?
For V = linspace(0, 2) there is no V < 0. But in general: V = linspace(-2, 2); J = J_0.* exp((q * V) ./ (n * K * T)) .*...

fast 5 Jahre vor | 1

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How to call a variable matrix from one script to another script
The first code shows a "script", the second one a "function". While scripts share their variables with the callers automatically...

fast 5 Jahre vor | 0

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Problem with figures in MATLAB - figures are full of glitching pixels
This is the best screenshot of the year 2021. Thank you. Did you update the graphic drivers? Does this occur also, if you use ...

fast 5 Jahre vor | 0

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Automatically continue a line
This cannot work without further assumptions. Because the existing line is drawn with some noise, e.g. due to rounding effects, ...

fast 5 Jahre vor | 2