Community Profile # Turlough Hughes

Last seen: 1日 前 2019 以来アクティブ

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how do i store for loop values?
There's only one value because your code is working as follows: for ii = 1:3 A = ii + 1 end Matlab is not told where to ...

20日 前 | 0

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Cannot obtain structure elements where both field and variable are indexed into
Try the following: students(1).name='john'; students(2).name='andrea'; arrayfun(@(x) students(x).name(1), 1:2).'

20日 前 | 0

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MATLAB-Binance-API
Suite of functions for accessing the Binance API via MATLAB. Supports trading on spot accounts and most public endpoints.

22日 前 | ダウンロード 48 件 | I wanted to 3D plot my data like shown in attached image.
Use <https://uk.mathworks.com/help/matlab/ref/surf.html surf()> or doc surf there are several examples at both locatio...

24日 前 | 0

how to convert from grayscale to rgb by lightness method ??
You can do the following: I=imread('peppers.png'); newImage = uint8(( double(min(I,[],3)) + double(max(I,[],3)) ) ./ 2); im...

25日 前 | 0

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evaluate rising edge sample of a signal
Is it just the local minima you're having trouble with? Edit: The rising edge is found where the slope of the original data ...

25日 前 | 0

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How to marker a fplot(anonymous function) function on a specific point which user enters.
You can add it in at the end of your function using plot: function x=calcDisplacement(t) m=1100; k=570; c=430; x0=0.05; v0...

25日 前 | 0

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how to select and save particulat part of a column in mat file?
columns = [2 3 5]; rows = 50:100; x = mydata(rows,columns); save('mydata.mat','x')

25日 前 | 1

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How to save data in a vector for each loop indice?
x = 1:0.1:1.5; vec=zeros(size(x)); for ii = 1:numel(x) sol = x(ii)+1; vec(ii)=sol; end vec

25日 前 | 1

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Random values in timetable
You can collect the data in the loop and then use timetable n = 1; for i = 1:5 Time(i,1) = datetime('now'); Conducti...

26日 前 | 2

Insert values of one vector at specific places into another
a = [0 0 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 1 0]; b = [ 10 20 30 40 50 ]; c = zeros(size(a)); c(logical(a)) = b

26日 前 | 0

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access data returned from a method of a class in other methods
You could make it a private property, the private property can only be accessed by the class (see property attributes). You're p...

26日 前 | 0

How can I find the Y value on an X–Y plot that corresponds to the tangent of the flattest part of a curve?
How robust this is depends on the consistency of that initial pattern, i.e. the initial acceleration followed by a period of dec...

26日 前 | 1

How to locate the x and y co-ordinate of minimum value from a contour plot automatically ?
Try: [min_e,index] = min(e,[],'all','linear'); x_min = x(index); y_min = y(index); hold on, plot(x_min,y_min,'ok','MarkerF...

27日 前 | 1

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Set properties from Superclass in subclass
Set the Access attribute in the superclass: classdef food properties protein carbs end ...

29日 前 | 0

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Repeat a 2D matrix at multiple places in 5D matrix
You could do the following: A(:, :, 2, :, :) = repmat(B,1,1,1,2,2);

29日 前 | 0

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Unable to perform assignment because the left and right sides have a different number of elements.
Your vlookup is not returning a value when j = 634. You will need a condition to deal with this when it happens. For example...

29日 前 | 0

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How to revert Editor window in MATLAB 2021A back to normal?

29日 前 | 0

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add data information with scatter or plot
Personally, I would just use scatter3 and then look at the data from above (along the z-axis). So something like: scatter3(x,y,...

30日 前 | 0

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Interchange dimensions of cell array and the matrices included in it
Here's one way temp = vertcat(originalData{:}); D = repmat({zeros(3,27)},1,1000); % preallocate for ii = 1:1000 D{ii} = ...

rectangle invisible in matlab
The following works for me: roi.Visible = 'off';

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How to extract points from a 3D plot that fall within a particular distance from the center coordinate?
The points which are within a radius, r, from the origin can be obtained as follows: index = sum(X.^2,2) < r^2; % X is an n by...

connect Matlab to Binance API
Try my recent submission to the file exchange: MATLAB-Binance-API Then placing a limit order is simply: obj = spot.newOrder(...

2ヶ月 前 | 1

Finding coordinates with image processing
You could use the regionprops function to get the centroids. See the following example: % This just sets up an image for demo ...

3ヶ月 前 | 0

Extracting files of the same name only from the first level of subdirectories
Hey Bob, a single star will go down one level only, so try the following: list = dir(fullfile(Alevel,'*','filename.txt'))

4ヶ月 前 | 0

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switch command on listbox value
You can get an index of the selected values as follows: idx = ismember(app.ListBox.Items,app.ListBox.Value); Then, make the pl...

4ヶ月 前 | 0

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4ヶ月 前 | 1

You could make a table as follows: w = strings(size(mci)); w(mci<0.4) = "wheeze"; w(mci>=0.4) = "non-wheeze"; T = table(mci....

4ヶ月 前 | 0

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Capture plot titles using getframe and writerobj
You can use the figure handle (instead of the axis handle) with the getframe function and that captures the entire interior of t...

4ヶ月 前 | 0

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How to divide images from folder into 4x4 blocks
Hi Petrus, the mat2cell approach that Jonas pointed out can be done more generally as follows. Note, this handles the scenario w...

5ヶ月 前 | 0

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