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Efficiently assign data into a struct?
You can replace all occurences of '1:end' with ':' and condense your indexing operations. This, for example, T1.var4.y = zer...

5개월 전 | 0

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How to multiply different size arrays and multiply each element by each element?
Download ndgridVecs from the File Exhange, https://www.mathworks.com/matlabcentral/fileexchange/74956-ndgridvecs?s_tid=srchtitl...

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Error using trainnet (line 46)
It appears that if your XTrain is in cell array form, you need to put your TTrain data in cell form as well: load('attachedData...

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Indexing a 4-D array using a logical matrix
Assuming you are trying to extract the polygon interiors, you could do, [~,~,p,q]=size(map); Map=reshape(map,[],p*q); tes...

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What is the difference between different ways to do least square
The train_100 system is underdetermined, so of course you aren't going to get a unique solution. For the 5k data, the only rea...

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How to change the ratio of sectors for a circle with 8 equal sectors
One possibility: dTheta=360/8; %sector angle t=linspace(0,dTheta)'; sector=polyshape([0,0;cosd(t),sind(t)]); circle=array...

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How to convert trajectory of the current vector to grayscale.
Maybe this is what you wanted? load("data.mat") Ia = data(:,1); Ib = data(:,2); Ic = data(:,3); %% Clarke (3 phase → αβ...

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optimization optimplot capture frame
optimplot does not plot in a figure container of the type that you can get a handle to. Prior to R2025, you could probably have...

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Preconditioning in fmincon
EDIT: You cannot pass a preconditioner on its own, nor would you want to if the true Hessian can be computed. However, using eit...

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How can I fit data to a piecewise function, where the breakpoint of the function is also a parameter to be optimised?
Why ? Both parabola can intersect below their respective maxima, and nonetheless the point of intersection can be the maximum y-...

6개월 전 | 0

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How can I fit data to a piecewise function, where the breakpoint of the function is also a parameter to be optimised?
Once you've chosen the coefficients of the first parabola [a1,b1,c1], the breakpoint is determined from, d=-b1/(2*a1) Only the...

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suprisingly complicated optimization problem
This is another suggested strategy: to find the minimum possible qmax, given L. This seems at the very least like an important f...

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suprisingly complicated optimization problem
The motivation of this problem is the creation of the so called, "homogenized" 1-D grid, where consecutive distances between ele...

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suprisingly complicated optimization problem
Here's another formulation, closer to your original one. It uses fmincon and is really fast (when the problem is feasible), but ...

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suprisingly complicated optimization problem
My thought is that you, (1) Do not include L in your list of unknowns. Solve a series of optimization problems for fixed L=1,2,...

6개월 전 | 2

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How to check whether a name is a locally accessible function?
One way, function tf = top_level_function(name) s=functions(str2func(name)); tf=strcmp( s.type , "scopedfunction") ...

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how to find orthonormal vector with condition?
n=[0,null([y,z])']

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Error `Index exceeds the number of array elements` while loading .mat file
You have created a variable named 'load' in this line, load = 0; % 轴承的载荷（单位：马力）（可能是0、1、2、3马力） and later also in,...

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AppDesigner: Is it possible to interactively stretch/schrink plots ("Axes") in x or y direction separately (NOT zoom in/out both)?
This example looks applicable to you: Restrict Zooming to X-Dimension.

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how to create the number of equations from a correlation matrix by excluding the most correlated variables?
That sounds like a bad idea. Normally, in MATLAB, you wouldn't write your equations in scalar form. You would write a matrix equ...

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Unable to use structName.?ClassName for VideoWriter class
The .?Classname syntax only works on the class properties with public SetAccess. Unfortunately, the VideoWriter class does not h...

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Closed contour with least square differences to dataset
A closed curve, e.g. a circle, would usually satisfy an implicit equation F(x,y)=0 The way to approach that is with implicit e...

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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...

6개월 전 | 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...

6개월 전 | 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;

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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...

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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...

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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...

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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...

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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',...

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