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how to make symmetric matrix with vector of its non repeated elements?

v = [1 4 5 6 9 0]; d = numel(v); n = (sqrt(8 * d + 1) - 1) / 2; % Number of rows and colums A = zeros(n, n); A(tril(true(...

how to make symmetric matrix with vector of its non repeated elements?

v = [1 4 5 6 9 0]; d = numel(v); n = (sqrt(8 * d + 1) - 1) / 2; % Number of rows and colums A = zeros(n, n); A(tril(true(...

1年以上 前 | 1

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Vectorization of nested for loops

Your fixed code: a = linspace(40,45,5); b = linspace(90,95,5); idx = 1; for ii = 1:4 for jj = 1:4 c(idx, :) = ...

Vectorization of nested for loops

Your fixed code: a = linspace(40,45,5); b = linspace(90,95,5); idx = 1; for ii = 1:4 for jj = 1:4 c(idx, :) = ...

1年以上 前 | 0

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Java Byte array to uint8 array

siz = size(Idata); Idata = reshape(typecast(Idata(:), 'uint8'), siz);

Java Byte array to uint8 array

siz = size(Idata); Idata = reshape(typecast(Idata(:), 'uint8'), siz);

1年以上 前 | 0

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How to remove all volumes that only have zeros in them from a 5D array?

Start with using loops at first: data = randi([0, 1], [2, 10, 112, 240, 30]); % Some test data for i3 = 1:size(data, 3) ...

How to remove all volumes that only have zeros in them from a 5D array?

Start with using loops at first: data = randi([0, 1], [2, 10, 112, 240, 30]); % Some test data for i3 = 1:size(data, 3) ...

1年以上 前 | 1

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Dynamical plotting acceleration during loop calculation

Without seeing the code, it is hard to guess the reason of the slow down. I dare to guess boldly, that you insert new objects in...

Dynamical plotting acceleration during loop calculation

Without seeing the code, it is hard to guess the reason of the slow down. I dare to guess boldly, that you insert new objects in...

1年以上 前 | 1

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access matlab figures by opening them with a mouse while a matlab terminal application is still running

This took 4 minutes for writing: function MainGUI FigH = figure('Name', 'Main GUI', ... 'MenuBar', 'none', ... ...

access matlab figures by opening them with a mouse while a matlab terminal application is still running

This took 4 minutes for writing: function MainGUI FigH = figure('Name', 'Main GUI', ... 'MenuBar', 'none', ... ...

1年以上 前 | 0

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I work on the project fake currency detection by MATLAB but I get a error i try to solve but i dont find solution

As I've written already, the problem is here: rectangle('Position',A(n, :), ' EdgeColor', 'r', 'LineWidth',4) % ...

I work on the project fake currency detection by MATLAB but I get a error i try to solve but i dont find solution

As I've written already, the problem is here: rectangle('Position',A(n, :), ' EdgeColor', 'r', 'LineWidth',4) % ...

1年以上 前 | 1

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Fastest Way to Keep the last N Outputs of a Loop in a Matrix

If you do not know the number of iterations in advance, a circulare buffer is more efficient than shrinking an expanding an arra...

Fastest Way to Keep the last N Outputs of a Loop in a Matrix

If you do not know the number of iterations in advance, a circulare buffer is more efficient than shrinking an expanding an arra...

1年以上 前 | 0

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Mean of every n number of doubles in a cell

I've reduced the test data size to 30x30 matrices - use the original sizes for your implementation: T = squeeze(num2cell(rand(3...

Mean of every n number of doubles in a cell

I've reduced the test data size to 30x30 matrices - use the original sizes for your implementation: T = squeeze(num2cell(rand(3...

1年以上 前 | 0

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access matlab figures by opening them with a mouse while a matlab terminal application is still running

What does "make some plots" exactly mean? .fig-files? PNG-files with raster copies of diagrams? What is the reason that they can...

access matlab figures by opening them with a mouse while a matlab terminal application is still running

What does "make some plots" exactly mean? .fig-files? PNG-files with raster copies of diagrams? What is the reason that they can...

1年以上 前 | 0

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I keep getting a "convenc" error. Line 88. Could be "varargin" missing argument? Not sure.

The line is incomplete: encoded = convenc(msg,trellis,); % ^ ???

I keep getting a "convenc" error. Line 88. Could be "varargin" missing argument? Not sure.

The line is incomplete: encoded = convenc(msg,trellis,); % ^ ???

1年以上 前 | 0

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convert all .mat files to .wav format in a folder at once

No, this cannot work "at once", but one file after the other in a loop. See e.g. FAQ: How to process a sequence of files. It is...

convert all .mat files to .wav format in a folder at once

No, this cannot work "at once", but one file after the other in a loop. See e.g. FAQ: How to process a sequence of files. It is...

1年以上 前 | 0

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File too complex to analyze, function maybe too large?

Try a simplified version: Calculate the function directly instead of creating a huge function handle. Use constants for the mo...

File too complex to analyze, function maybe too large?

Try a simplified version: Calculate the function directly instead of creating a huge function handle. Use constants for the mo...

1年以上 前 | 0

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How to create a vector for multiple frames of data in rows and columns?

The actual question is: "I need to create a vector that corresponds to the time of each frame starting at 0" What about: t = l...

How to create a vector for multiple frames of data in rows and columns?

The actual question is: "I need to create a vector that corresponds to the time of each frame starting at 0" What about: t = l...

1年以上 前 | 0

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How to read a specially structured data file

[fid, msg] = fopen('test.5p'); assert(fid > 0, '%s', msg); C = fscanf(fid, '%g', inf); % Read all in one block fclose(fid); ...

How to read a specially structured data file

[fid, msg] = fopen('test.5p'); assert(fid > 0, '%s', msg); C = fscanf(fid, '%g', inf); % Read all in one block fclose(fid); ...

1年以上 前 | 2

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how to reduce the size of array as small as the smallest array to have them in one matrix

There are several possibilities: Fill the shorter arrays with zeros or NaNs on the top, bottom or both. Crop the longer arrays...

how to reduce the size of array as small as the smallest array to have them in one matrix

There are several possibilities: Fill the shorter arrays with zeros or NaNs on the top, bottom or both. Crop the longer arrays...

1年以上 前 | 0

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How to make a folder, call functions from it, and then go back to the current directory

Changing the current directory is not useful in stable code, neither to process data nor to run Matlab functions. The addpath c...

How to make a folder, call functions from it, and then go back to the current directory

Changing the current directory is not useful in stable code, neither to process data nor to run Matlab functions. The addpath c...

1年以上 前 | 1

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Why is my function not working?

Avoid using the name of the function as name of the output. This is confusing only. Which is the failing line? In this line f35...

Why is my function not working?

Avoid using the name of the function as name of the output. This is confusing only. Which is the failing line? In this line f35...

1年以上 前 | 1

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How to put non repeated elements of a symmetric matrix in a row vector?

You have hidden an index in the name of the variables. This was a bad idea. It is time to re-organize your data. Are all these ...

How to put non repeated elements of a symmetric matrix in a row vector?

You have hidden an index in the name of the variables. This was a bad idea. It is time to re-organize your data. Are all these ...

1年以上 前 | 1

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can we share our original code here,?

The FileExchange is a suiting location for sharing code, while the Answers forum is not. Plagiarism does only occur, if the cop...

can we share our original code here,?

The FileExchange is a suiting location for sharing code, while the Answers forum is not. Plagiarism does only occur, if the cop...

1年以上 前 | 0

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how to plot subfigures in one figure like this image?

subplot calls axes with specific 'Position' proerpties inside. You can do this directly also. ax1 = axes('NextPlot', 'add', 'Vi...

how to plot subfigures in one figure like this image?

subplot calls axes with specific 'Position' proerpties inside. You can do this directly also. ax1 = axes('NextPlot', 'add', 'Vi...

1年以上 前 | 0

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why two function in separate m.file not in one ?

If you need a function inside another one only, you can store it in the same M-file. If other function should have access to the...

why two function in separate m.file not in one ?

If you need a function inside another one only, you can store it in the same M-file. If other function should have access to the...

1年以上 前 | 0

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Setup alias command in Windows.

As far as I understand, Matlab does not run in the command shell under Windows. Maybe the -batch or -wait flags are useful. See...

Setup alias command in Windows.

As far as I understand, Matlab does not run in the command shell under Windows. Maybe the -batch or -wait flags are useful. See...

1年以上 前 | 0

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How to create function handle using random output

Maybe: maximand = @(x) f([p_bar, q_bar, r_bar, x(randperm(3, 3))])

How to create function handle using random output

Maybe: maximand = @(x) f([p_bar, q_bar, r_bar, x(randperm(3, 3))])

1年以上 前 | 0

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use two indexes at the same time in a for loop

for i = 4:5 & k = 1:2 This is pure guessing. While some human can understand, what you want, if you apply such trivks inspo...

use two indexes at the same time in a for loop

for i = 4:5 & k = 1:2 This is pure guessing. While some human can understand, what you want, if you apply such trivks inspo...

1年以上 前 | 1

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How do I add a left/right axis to a plot in matlab 2013a

You find several corresponding FileExchange submissions: https://www.mathworks.com/matlabcentral/fileexchange?q=plotyy plotyy ...

How do I add a left/right axis to a plot in matlab 2013a

You find several corresponding FileExchange submissions: https://www.mathworks.com/matlabcentral/fileexchange?q=plotyy plotyy ...

1年以上 前 | 0

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WindowButtonMotionFCN callback slow down the application

Try if rejecting repeated calls solve the delay. See e.g. https://www.mathworks.com/matlabcentral/answers/570829-slow-sizechange...

WindowButtonMotionFCN callback slow down the application

Try if rejecting repeated calls solve the delay. See e.g. https://www.mathworks.com/matlabcentral/answers/570829-slow-sizechange...

1年以上 前 | 0

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how to do break the program written in script file and execute

Breakpoints are a good idea: Simply click on the bar on the left side of the editor. You will see a red dot occurring there. Mat...

how to do break the program written in script file and execute

Breakpoints are a good idea: Simply click on the bar on the left side of the editor. You will see a red dot occurring there. Mat...

1年以上 前 | 0

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Image processing of a binary image

w = 300; % Image size bigR = 140; smallR = 15; wantN = 40; % Number of small circles N = 0; center = zeros(...

Image processing of a binary image

w = 300; % Image size bigR = 140; smallR = 15; wantN = 40; % Number of small circles N = 0; center = zeros(...

1年以上 前 | 0

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How can I get a variable that starts in t=0?

y(1, 1) = 500; % Set initial value before the loop for t = 1:249 % y(1, :) is defined already, so start at t=1, not t=0 ...

How can I get a variable that starts in t=0?

y(1, 1) = 500; % Set initial value before the loop for t = 1:249 % y(1, :) is defined already, so start at t=1, not t=0 ...

1年以上 前 | 1