# Turlough Hughes

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**Content Feed**

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 ...

ungefär 2 månader ago | 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).'

ungefär 2 månader ago | 0

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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...

ungefär 2 månader ago | 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...

ungefär 2 månader ago | 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 ...

ungefär 2 månader ago | 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...

ungefär 2 månader ago | 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')

ungefär 2 månader ago | 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

ungefär 2 månader ago | 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...

ungefär 2 månader ago | 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

ungefär 2 månader ago | 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...

ungefär 2 månader ago | 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...

ungefär 2 månader ago | 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...

ungefär 2 månader ago | 1

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Set properties from Superclass in subclass

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

ungefär 2 månader ago | 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);

ungefär 2 månader ago | 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...

ungefär 2 månader ago | 0

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

ungefär 2 månader ago | 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,...

ungefär 2 månader ago | 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} = ...

ungefär 2 månader ago | 0

rectangle invisible in matlab

The following works for me: roi.Visible = 'off';

ungefär 2 månader ago | 1

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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...

ungefär 2 månader ago | 1

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(...

3 månader ago | 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 ...

4 månader ago | 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'))

5 månader ago | 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...

5 månader ago | 0

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Reading values from xml file

You can now read XML files in R2021a using readtable (and readtimetable). For example: filename = 'students.xml'; T = readtabl...

5 månader ago | 1

How can I assign information to my array file?

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....

5 månader ago | 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...

5 månader ago | 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 månader ago | 0

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Identify index of cell based on stringlength

Example data: Tstr{1}{1,1} = 'Hello... It me, I was wondering if after all these years youd like to meet'; Tstr{1}{2,1} = '18...

6 månader ago | 0

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