Answered
Dot Multiplication in MATLAB
For matrices A and B, the rule is generally that A.* B is element-by-element multiplication a(i,j).*b(i,j), which means that nor...

2 years ago | 1

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Answered
Find paths in graph that satisfy specific condition
s=[17,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,30,30]; t=[18,19,20,21,22,23,24,25,26,27,28...

2 years ago | 0

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Answered
Getting error in fmincon with below code how to correct it
You seem to be trying to minimize over a space of functionals, F. You cannot do that with fmincon. The objective must be a funct...

2 years ago | 0

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How to plot a grouped bar chart?
https://www.mathworks.com/help/matlab/ref/bar.html#bthxce9

2 years ago | 1

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Answered
Subdivide a figure with a grid (as in Timescope)
Something like this, perhaps? t=tiledlayout(2,2); for i=1:4, nexttile(t), plot(rand(1,4)); grid on; end background=axes('Po...

2 years ago | 0

Answered
vectorized operations on symbolic functions
syms x1 x2 x3; % symbolic variables y = x1^3/3 + x2^2/2 - x3; % symbolic function y X = rand(500,3); % each row representing a...

2 years ago | 1

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...

2 years 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...

2 years 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...

2 years ago | 0

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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)

2 years 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...

2 years 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...

2 years ago | 0

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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...

2 years 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...

2 years 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...

2 years 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...

2 years 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,...

2 years 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) ...

2 years 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...

2 years 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...

2 years ago | 0

Answered
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...

2 years 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 ...

2 years 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)

2 years 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...

2 years ago | 1

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

2 years ago | 0

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

2 years 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...

2 years ago | 0

Answered
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...

2 years 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/...

2 years ago | 0

Answered
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...

2 years ago | 0