Answered
Polyfit isn't adjusting to decreasing sinoidal data
Polynomial fitting above 10 degrees or so is a famously ill-conditioned numerical task, see also, https://en.wikipedia.org/wiki...

1 month ago | 0

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The keyboard shortcut to change focus to the editor doesn't work.
Try first dragging the editor window into focus manually with the mouse. Then, check if Ctrl+0 and Ctrl+Shift+0 toggles the edit...

1 month ago | 0

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how to filter columns
m=576; n=1000; k2=randi([0,1],m,n).*rand(m,n); tic; r=max( (k2==0)'*k2 ,[],2); toc;

1 month ago | 0

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Get extrinsic camera parameters from pose estimation
From the documentation for estimateMonoCameraParameters, it appears that the camera is assumed to lie at a translation of C=[0,0...

1 month ago | 0

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Answered
Mean of 3D matrix based on range of first dimension
This might seem a little counter-intuitive, but the key is that it avoids extracting a submatrix (an expensive op) from the inpu...

1 month ago | 0

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Measuring Line Profiles in IMages
I=im2double(im2gray(imread('image.png'))); BW=imbinarize(I); D=bwareaopen(abs(gradient(I))>0.06,20); D=imclose(D,strel('d...

1 month ago | 0

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Answered
do we have any pre provided function for reitveld refeinement in matlab
No, there is no dedicated crystallography toolbox in Matlab. You could build your own with Optimization Toolbox functions like l...

1 month ago | 0

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Issues creating error bar for bar figure
Here's an MWE: x = ["A"; "B" ] ; y = [3,4] ; err = [0.5,0.75] ; bar(x, y); hold on errorbar(categorical(x),y,err,'r',...

2 months ago | 1

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Answered
How to set a protected superclass property from subclass method?
You cannot use the ?.MVA syntax on non-public properties. Since you already have validation in the base class, I don't think you...

2 months ago | 0

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rref matrix with an unkown variable
I am expecting to get (did this by hand): Your expected result doesn't look right. For both row-echelon and reduced row-echelon...

2 months ago | 0

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Answered
Strange behaviour using double
You could replace the commas with some other NaN-triggering character, e.g., c={'1.23', '1,234'} double(replace(string(c),',...

2 months ago | 0

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Compare two row and select appropriate data
Basically column b is the "cap." If so, one could also do, a=[1;2;3;4]; b=[1;1;3;3]; c=clip(a,-inf,b)

2 months ago | 0

Answered
Reduce x-axis line length in a bar plot that is in a tiledlayout
For finer control, download subaxis. Use that instead of tiledlayout. clear, %close all % Define the data 1 Names1 = {'A...

2 months ago | 1

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Answered
Compare two row and select appropriate data
c=max(a,b)

2 months ago | 0

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Error while running my objective function by fmincon with nonlinear constraint for calculate optimization coordination overcurrent relay
You have a parameter b defined here b = 0.14; but then you overwrite it here: A = []; b = []; Aeq = []; beq = []; Also, r...

2 months ago | 1

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Suppressing Live Script plotting figure inline
I don't think it's possible. However, you could shrink down the side bar area of the livescript where the figures are displayed,...

2 months ago | 0

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A more efficient way to do this calculation
function [HD_cols] = members(Ic); HD = [ ... 160000/100^4, 180000/100^4, 204000/100^4, 226000/100^4, 250000/100^...

2 months ago | 1

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Reading JSON struct from file adds prefix 'x' to fieldname if it starts with number
but I cannot find anything that would explain why 'x' is added. Presumably you know that something must be added, because vari...

2 months ago | 0

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Answered
Figure window not showing up
I wonder if the default figure position changed somehow so that figure windows open off-screen... Opening a window with an expli...

2 months ago | 0

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Answered
Build matrix from corresponding table variables stored in cell array
load data D=reshape( vertcat(C{:}).Col1 , height(C{1}) ,[])

2 months ago | 1

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Answered
Build matrix from corresponding table variables stored in cell array
I hope you understand that speed-wise there is no way to iterate over cell arrays that is faster than a for-loop. However, using...

2 months ago | 0

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Finding the length distribution of zeros in data?
You can use this File Exchange submission, https://www.mathworks.com/matlabcentral/fileexchange/78008-tools-for-processing-cons...

2 months ago | 0

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Issues with reproducibility in multistart with parallelization
I don't see why you would expect agreement between a 50-point multistart and a 150-point multistart. Only if both versions succe...

2 months ago | 1

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How can i write a MATLAB script for surface profile analysis of different geometries(such hemisphere, plane, sphere, asphere...) including vertex search, data processing,fit?
It sounds like this might benefit you, https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools-to-fit-...

2 months ago | 0

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Operations with rows First, second and third
For example, a = [0 1 1 0 0 1 0 1 0; 1 1 0 1 0 0 1 1 1; 0 0 0 1 1 1 0 0 1] first_and_second = sum( ~a(1,:)&a(2,:))

2 months ago | 1

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Answered
I am coding a equation for curve fitting, but I am facing inaccuracy. I am not getting Elastic plateau in the curve. Can anyone guide me how I can address the issue.
You need a better initial guess. Also, you should exclude the data from the linear elastic region, since clearly that is not cap...

2 months ago | 0

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How can I add a backup an option, addSaveCallback, to save a timestamped version of my file, to the MATLAB editor?
Instead of trying to get the standard Save button to do what you want, you can make a Quick Access Toolbar button which runs you...

2 months ago | 0

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function input arguments error
Your code uses 'isreal' as both the name of a function and a variable. You can resolve the conflict by renaming the output, e.g....

2 months ago | 1

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Invalid training data. Predictors and responses must have the same number of observations.
Your XTrain shouldn't be a 100x6 cell. It should be a 100x1 cell where each XTrain{i} is a matrix with 6 rows. Example, layers ...

2 months ago | 1

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Answered
Problems with quiver plot
I think you just need axis equal. %% system paramters eta = .1; mu = .1; nu = 1; gamma = 2; %% dependent variables roi...

2 months ago | 0

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