# Turlough Hughes

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**Content Feed**

Reformat table with a column as a top row

You can reorganise the data pretty close to what you showed using unstack, but to get the header organised as you have shown wou...

17 dagen ago | 0

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How could I make a callback that updates when the user moves an roi?

This is what I had in mind: interactiveZoomDemo; function [] = interactiveZoomDemo() I = imread('saturn.png'); hf = figu...

22 dagen ago | 0

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How to decrease margins around uibutton in uigridlayout?

Use the ColumnSpacing property: g.ColumnSpacing = 1;

23 dagen ago | 0

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How to create rainbow colormap with violet

Violet is approximately [0.5 0 1] in the rgb space. So we can modify the blue part of the jet colormap, to have a bit more red ...

23 dagen ago | 0

Save an image from a matrix

Here's one way - convert to an 8 bit array with values between 0 and 255 and then save: I2 = 255*(I - min(I(:))) ./ (max(I(:)) ...

23 dagen ago | 0

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Would it be possible to change the greyscale to a blue scale?

I don't think MATLAB has a blue scale colormap. You could do something custom, like the following. I'll use camerman for illustr...

23 dagen ago | 0

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How to get integer pixel coordinates from roi rectangle?

When used on images, the drawrectangle function uses intrinsic image coordinates (see this documentation) as shown by the x and ...

23 dagen ago | 0

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Assign dimensions for my image. I have an image and I need to give it a length that I know.

The imref2d object is useful for exactly this. Let's have a look at an example: % Example of a Binary image BW = imbinarize(im...

24 dagen ago | 0

No effect of the FaceLighting property on a single patch?

There are two reasons. First is that you need to add a light object to the axes. To do that, use the light function. The secon...

24 dagen ago | 2

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How can I find distance in a binarized image

I originally answered this for the case of the binary image you represented in png format (this is not technically a binary imag...

24 dagen ago | 2

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how do i deduce the function using linear regression for a set of x and y values?

Consider using a power fit. Your data: x = readmatrix('https://uk.mathworks.com/matlabcentral/answers/uploaded_files/850570/x2...

25 dagen ago | 1

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I need to make a general code

Try this: function [idx,x] = chaoticInterleaver(N) assert(mod(N,8)==0,'N must be divisible by 8.') idx = zeros(N); x = N * (...

26 dagen ago | 0

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Rearrange a correlation matrix into a vector and keep track of the corr names.

You can get the corresponding row and column indices as follows: [iRow, iCol] = find(ind); Then you can get the corresponding ...

ongeveer 2 maanden ago | 0

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Properly centering interquartile ranges on graphed data

You can use the quantile function Your simulation: clc clearvars %Total number of replicates nr=1000; %Time step and lengt...

ongeveer 2 maanden ago | 0

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Submitted

MATLAB-Binance-API

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

ongeveer 2 maanden ago | 41 downloads |

Converting a 2d array into a 3d array

You could write a linear index for the diagonal elements as follows: [m,n] = size(Z_int) Z = zeros(m,m,n); idx = repmat((1:...

2 maanden ago | 0

Image cropping in exact cordinate in cell array

You can make the following modification (make sure to place your cellfun calls after the for loop) cropped_imgs = cellfun(@(I) ...

2 maanden ago | 1

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Count instances of subarray inside array

You could do the following: b = A == 2; % binary indicating where A equal to 2 count = 0; ii = 1; while ii < numel(A) i...

3 maanden ago | 0

remove rows in table based on criteria across two columns

Try the following: T(contains(string(T{:,1}),'80ms,140ms') & T{:,2} ~= 1,:) = []; T(contains(string(T{:,1}),'100ms,250ms') & T...

3 maanden ago | 0

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Clone GitHub repository - Authentication Failed

You need to follow the steps described <https://uk.mathworks.com/help/matlab/matlab_prog/set-up-git-source-control.html#mw_77963...

3 maanden ago | 0

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 ...

5 maanden 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).'

5 maanden 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...

5 maanden 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...

5 maanden 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 ...

5 maanden 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...

5 maanden 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')

5 maanden 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

5 maanden 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...

5 maanden 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

5 maanden ago | 0

| accepted