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Matt J


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Professional Interests: medical image processing, optimization algorithms PLEASE NOTE: I do not read email sent through my author page. Please post questions about FEX submissions in their respective Comments section.

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Réponse apportée
Please help me to solve two nonlinear algebraic equations
syms L1 L2 eq1 = b5*L1^2 + (b9 + b7)*L1 + ... b6*L2^2 + b10*L2 + b8 == 0; eq2 = b27*L1^4 - b32*L1^3 + b33*L1^2 - b3...

environ 15 heures il y a | 0

Réponse apportée
Innerjoin when a table contains user-defined objects
Attached is a possible workaround. load testdata tableInner(Tleft,Tright)

environ 23 heures il y a | 0

Question


Accessing a single GPU from different workers of a parpool thread pool
It used to be conventional wisdom that parfor does not play well together with gpuArray on a single-GPU system because differen...

1 jour il y a | 1 réponse | 0

0

réponse

Question


Innerjoin when a table contains user-defined objects
I have two tables that I wish to innerjoin() according to the topThick and botThick columns, which are the same in both tables. ...

1 jour il y a | 2 réponses | 0

2

réponses

Réponse apportée
every restart of Matlab path is lost
If you don't want to make the path permanent (using savepath), you can use a startup script to set the path at the beginning of ...

3 jours il y a | 1

Réponse apportée
Possible to use box or violin plots, with unequal x and y axis spacing?
clear; close all, clc %%Instrument A yA=(1:9)*0.1; xA=randn(2*60, numel(yA))+15; %%Instrument B yB=[0.5,1]; xB=r...

4 jours il y a | 0

A soumis


Customized text modification buttons for the Matlab Editor
A pair of functions enabling simple, programmatic modification of Matlab Editor text. These can be used to make customized butto...

6 jours il y a | 1 téléchargement |

0.0 / 5

Réponse apportée
Shortcut for zoom tool in figure
You haven't listed the version of Matlab you are using, but in any recent version you do not need to make a toolbar selection to...

6 jours il y a | 0

Réponse apportée
Transfer shortcuts(favouritecommand) from 2017b to 2022b
Look for the set of .xml files in your prefdir that are NOT highlighted in yellow in the list below. These should be copied ov...

6 jours il y a | 0

Réponse apportée
How to calculate the average value of a vector in MATLAB?
mean([10,20,30,40,50])

8 jours il y a | 0

Réponse apportée
How deep network designer with neural network fitting
See here for an intro to Deep Network Designer, https://www.mathworks.com/help/deeplearning/gs/get-started-with-deep-network-de...

13 jours il y a | 0

Réponse apportée
How to move selected variables to one side of a symbolic equation
syms c1 c2 c3 c4 c5 c6 c7 syms A B C M N O F eq = c1*A + c2*B + c3*C + c4*M + c5*N + c6*O + c7 == F; vars=[A,B,C].'; %...

15 jours il y a | 0

| A accepté

Réponse apportée
How to move selected variables to one side of a symbolic equation
syms c1 c2 c3 c4 c5 c6 c7 syms A B C M N O F eq = c1*A + c2*B + c3*C + c4*M + c5*N + c6*O + c7 == F; vars=[A,B,C]; %se...

15 jours il y a | 0

Réponse apportée
Orientation of Shell grid
Apply a 3x3 rotation matrix R to the tetrahderon which transforms the (0,0,0) to (1,1,1) edge so that it aligns with the z-axis...

15 jours il y a | 0

Réponse apportée
Orientation of Shell grid
Obtain vertices for the complete, non-truncated cylinder Vcyl and the vertices Vtet for the tetrahedron containing it. Then, you...

15 jours il y a | 0

Réponse apportée
How to do a polynomial fit to a dataset with an excluded term
Use mldivide, \ to solve the appropriate linear equations for the coefficients, coefficients=x(:).^[0,1,2,4] \ y(:);

16 jours il y a | 1

Réponse apportée
Count number of true statements in a sequence until false, then check for the next true and repeat
Download this, https://www.mathworks.com/matlabcentral/fileexchange/78008-tools-for-processing-consecutive-repetitions-in-vecto...

23 jours il y a | 0

Réponse apportée
Graphics argument validation for function in parfor loop
Second, is there any way to retain automatic argument validation for an axis object that plays nicely with parfor, in cases wher...

26 jours il y a | 1

Réponse apportée
Non-linear data fit with multiple constants
Though your post's title says the fitting problem is nonlinear, it is actually linear when b and d are known, and so has a simpl...

environ un mois il y a | 1

Réponse apportée
Memoize an anonymous function with externally scoped variables
One solution is to rebuild the anonymous function inside the memoized function using a container class: mf=memoize(@subfunc); ...

environ un mois il y a | 0

Question


Memoize an anonymous function with externally scoped variables
I am trying to memoize a function that takes an anonymous handle with an externally-scoped parameter as input. The problem is th...

environ un mois il y a | 3 réponses | 0

3

réponses

Réponse apportée
Is there a way to insert a common ylabel to secondary axes in a tiled layout?
t = tiledlayout(2,2); for i = 1:4 f = figure(1); ax = nexttile; yyaxis left x = (1:10); y = rand(1,10)...

environ un mois il y a | 0

Réponse apportée
How does Matlab interact with custom Diffusion models?
From what I've read, simple diffusion U-Nets are well within Matlab's reach. For very advanced models like LDF-VFI, Matlab can d...

environ un mois il y a | 0

Réponse apportée
transfer learn without losing old memoy YoloX
Continual learning is a serious research topic.There are no off-the-shelf tools in Matlab to do it in a sophisticated way. You w...

environ un mois il y a | 0

| A accepté

Réponse apportée
How to flatten an image and find dimensions?
Find the 4 vertices of the outer ellipse (i.e., the end points of the major and minor axes). This can be done manually with draw...

environ un mois il y a | 0

Réponse apportée
help with XYZ data file
This might be what you're looking for: zq=fspecial('gaussian',200,40); Nlevels=5; zRanges=linspace(min(zq(:)) ,max(zq(:))...

environ un mois il y a | 0

Réponse apportée
help with XYZ data file
First question, I would like to be able to plot some of the planes of XY with fixed Z values/range. The terminology "planes of...

environ 2 mois il y a | 0

A soumis


Quadratic minimization with norm constraint
Minimizes convex or non-convex quadratics subject to (in)equality constraint on norm(x)

environ 2 mois il y a | 3 téléchargements |

4.5 / 5

Réponse apportée
How to find a rotation vector for use in rotate, if the rotation matrix is rank deficient?
Probably easier to use hgtransform, which allows you to perform the rotation by specifying only the rotation matrix.

environ 2 mois il y a | 0

Réponse apportée
Find specified number of points on curve with identical chord length (not arc length)
Here's an approach using fminbnd to minimize the attached cost function circleMarch(). t=linspace(0,200,1e4)'; %%% XY=[cosd...

environ 2 mois il y a | 0

| A accepté

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