Answered
How to add an image to the current axes without replacing existing plots
You can use hold fcontour(@(x,y) (x-50).^2+(y-50).^2,[20,80],'m'); hold on imshow(imread('cameraman.tif')); hold off h=gc...

10 days ago | 0

Answered
Restart Fmincon Optimization from Checkpoint File
No, unfortunately. Restarting from the last point is probably the best you can do. Although, apart from the interior-point algor...

10 days ago | 0

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Answered
Image semantic segmentation dimension layer why not match input and output
Below is what analyzeNetwork gives. Only you know what you want the dimensions of each of your activation maps to be. Tell us at...

10 days ago | 0

Answered
Combining two arrays using a seconds order
number = randperm(10, 10) number2 = randperm(10, 10) I=ismember(number2,number(1:5)); number(1:5)=number2(I)

10 days ago | 0

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Answered
How can I calculate the unique centroids along with its radius range ?
load data; threshold=2; %Example input T=sortrows(table(Centroid, Radius),2) Centroid=T.Centroid; Radius=T.Radius; D=pdi...

10 days ago | 1

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Answered
Profile and debug load function
You could pursue your hypothesis by extracting the table from an object, then saving the idnlarx column to its own .mat file. Th...

10 days ago | 0

Answered
Struct field name with space or special character
Another option is to use dictionaries, which are a bit more similar to structs than tables, e.g. secretID=["Steve Rogers", "Ton...

11 days ago | 1

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How do I mark all critical points on a graph of a function?
syms x; f=(sin(x)+(1/3)*(cos(5*x))); v=matlabFunction( diff(f) ); f=matlabFunction(f); x=linspace(0,2*pi,1e5); loc=find(g...

11 days ago | 1

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Answered
How do I add transparency to a plot in the Live Editor?
The syntax of giving an RGBA color setting seems to be a very old and undocumented feature, https://undocumentedmatlab.com/arti...

11 days ago | 1

Question


Plotting lines with quadruplets R-G-B-Alpha ?
It appears that in recent Matlab, I am able to append a 4th number to the RGB triplet, which appears to set either a transparenc...

11 days ago | 2 answers | 0

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Answered
identifying and isolating consecutive numbers
code that will split A into B = [1 2 3 4] C = [14 15] D = [23 24 25] It would be a bad idea to split A into separate variables,...

12 days ago | 1

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Answered
Modifying the objective function in order to meet the optimization variable boundaries
If the boundaries are given by simple lower and upper bound vectors lb and ub, you can do, function fun=objective(A,lb,ub) ...

12 days ago | 0

Question


Where is dlfeval tracing information stored?
When dlfeval() is used to call a function, the computation is traced in such a way as to later allow automatic differentiation v...

12 days ago | 1 answer | 0

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Answered
3D image alignment: How to extract rotation angles about "static" x,y,z axes from a 3x3 rotation matrix
Attached is the utility that I use. In alignment with what you are pursuing, the code does assume the rotation matrix is a colum...

12 days ago | 0

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Divide circular rings in N angular portions
The problem is that the angular portions do not have the same number of elements That's because the image is discretized into p...

13 days ago | 1

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Answered
Error in table row subscript
In what way is this not what you want? Northpopulation = readtable("LN_NEXTGROWTH.csv"); %LN = []; <-----You don't need this ...

13 days ago | 0

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how can I plot a 3-D helical trajectory
t=linspace(0,18*pi, 3000); plot3(2*cos(t), 2*sin(t), t/pi)

13 days ago | 0

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How to calculate spray cone angle?
load Image BW = imfill( bwareafilt(imclose(entropyfilt(im2gray(Image))>4.5,strel('disk',5)),1),'holes'); BW=bwareafilt(~im...

13 days ago | 1

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Array indices must be positive integers or logical values.
fx = @(X) X.^2-1-sin(X);

13 days ago | 0

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Answered
Compare Elements in 2 Arrays
Gen_Excess=min(Gen_Excess,Batt_cap);

14 days ago | 0

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Answered
Change function name everywhere
There is a Find-and-Replace app on the File Exchange that can recurse through mfiles in a folder structure and replace text: ht...

15 days ago | 0

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dlgradient of a subset of variables
This seems to work: X0 = dlarray( [1; 2; 3; 4]*10 ); subset=[2,3]; gradTotal = getGradient(X0) %total gradient gradSubse...

15 days ago | 1

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Answered
A bug? input: 1/0 output: -Inf
Theorem: 1/0 = Inf if and only if 1/0 is also -Inf. Proof: Assume first that 1/0=Inf and let us deduce the implication that 1/...

15 days ago | 0

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Can figure numbers be re-assigned?
The only reliable way that I have found, one which avoids copyobj and keeps all the figure formatting, is to save all open figur...

16 days ago | 0

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Speeding up this function involving 3D matrix multiplications.
Don't use permute(___,[2,1,3]) to transpose the pages in conjunction with pagemtimes. Use the transposition flags, Z = pagemtim...

16 days ago | 2

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Answered
lsqcurvefit claiming complex-valued function
Because the log of a negative real number is complex, e.g., log(-2)

16 days ago | 0

Answered
cubic spline interpolation - mixed boundary conditions possible?
This FEX download will let you impose conditions like that, https://www.mathworks.com/matlabcentral/fileexchange/24443-slm-shap...

16 days ago | 0

Answered
How to color Gaussian 3D plot with shiny texture?
[X, Y] = meshgrid(-3:0.1:+3); Z = exp(-X.^2-Y.^2); surf(X,Y,Z,'FaceColor',[0.6 0.1800 0.700],'EdgeColor','none'); light...

17 days ago | 1

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Answered
Stationary point Code Error. Trying to find stationary points for the equation below. Was having a hard time doing it by hand so tried a code.. getting error for fsolve.
The problem is strictly convex, so obviously the staitonary point is unique and lies at the global minimum. So why not just use ...

17 days ago | 0

Answered
Access to non-public class members
You could move the classdef to an @-folder, either manually or programmatically and either temporarily or permanently. Then, add...

17 days ago | 1

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