Respondida
fminunc step size too small
It's not clear to me whether you are are talking about the StepTolerance or the FiniteDifferenceStepSize, both of which you have...

más de 1 año hace | 0

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Respondida
how to update MATLAB 2024b when cannot uninstall old version
I've never heard of an "already installed" message when trying to update. At most, it may tell you to close any open instances o...

más de 1 año hace | 0

Respondida
vector conversion from a vector of numbers to a vector cell of chars.
Y=[0 4 6]; X=Y+""; X={X{:}}

más de 1 año hace | 0

Respondida
Help Plotting an Ellipse from X,Y data
a=3; b=2; %Major/minor ellipse radii plot(rand(1,5)); hold on; axis equal ellipse = translate( scale(nsidedpoly(1000),[a,b]...

más de 1 año hace | 0

Respondida
connecting concenation layer error
Use connectLayers to make your connections programmatically or make the connections manually in the deepNetworkDesigner.

más de 1 año hace | 0

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Pregunta

deepNetworkDesigner: autoscrolling, connection preservation, undoing, and landscaping
I am encountering several issues with deepNetworkDesigner. (1) I have a large network whose layers do not fit entirely on one s...

más de 1 año hace | 0 respuestas | 0

0

respuestas

Respondida
I have an equation. I want to adjust one of the values in the equation until it hits a certain output. How do I run a loop to increment that certain value until it does this?
X=21; Y=4; P=3; increment=1; Yp=X/P; delta=ceil((Yp-Y)/increment); Y=Y+delta

más de 1 año hace | 0

Respondida
transformPointsForward does not support PolynomialTransformation2D
Polynomial tforms are generally not invertible, so you can only define them in one direction. I assume fitgeotform2d always fits...

más de 1 año hace | 0

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Respondida
FGETL taking a long time to execute
readlines?

más de 1 año hace | 0

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Respondida
How to view a 3D Figure from "below", e.g. z-axis facing downwards
Set the CameraUpVector axis property. figure plot3(0,0,0) line([0 0.1],[0 0],[0 0],'LineWidth',5,'DisplayName','X') line([0 ...

más de 1 año hace | 1

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Respondida
Convert Set of (x,y) Coordinates Into Polygon
This uses tspsearch from the File Exchange, https://www.mathworks.com/matlabcentral/fileexchange/71226-tspsearch load coordina...

más de 1 año hace | 0

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Respondida
Using drawpoint in 3d axes
Another approach is to make a custom app, with controls for the position of the electron. ...

más de 1 año hace | 0

Respondida
Using drawpoint in 3d axes
You cannot place a 3D point using a drawing object that has only 2 degrees of freedom. Probably the better approach is to use th...

más de 1 año hace | 0

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Respondida
How do I set up fmincon correctly for parallel computation? "Supplied objective function must return a scalar value"
I want to parallelize the computation, either by calculating several gradients at the same time, or solve the problem for severa...

más de 1 año hace | 0

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Respondida
Multiobjective optimization with polygon boundary
Use vert2lcon to find the inequalities for the constrained region, https://www.mathworks.com/matlabcentral/fileexchange/30892-a...

más de 1 año hace | 1

Respondida
Custom loss function (based on error multiplication rather than sum) in classification neural network
Using trainnet you can provide any loss function you wish. However, a multiplicative loss function sounds like a doubtful idea. ...

más de 1 año hace | 0

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Respondida
Vectorizing 2D DFT for only select region of the output
Ex=subDFTmatrix(kx_vals,Nx); Ey=subDFTmatrix(ky_vals,Ny); F_partial = Ey*image*Ex.'; function E=subDFTmatrix(k,N) E...

más de 1 año hace | 0

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Enviada

N-dimensional sparse arrays
Creates an N-dimensional sparse array object, for arbitrary N.

más de 1 año hace | 5 descargas |

4.8 / 5

Respondida
Where I make a mistake with fminimax?
Some ideas, The choice of initial guess p0=[1,1,1,1,1] looks arbitrary. I don't see why that would be a good guess. You should...

más de 1 año hace | 1

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Respondida
How to get a dlgradient result for a blackbox function
radon() can be expressed as a matrix multiplication, and matrix multiplications are of course supported by dlarrays. One option ...

más de 1 año hace | 1

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Respondida
Does gather() clear memory
It seems to for me: >> A=gpuArray.rand(300,300,300); >> gpuDevice().AvailableMemory ans = 3.1956e+09 >> A=gather...

más de 1 año hace | 0

Respondida
How to use validation dataset in iteration-based deep network training?
Sure, use the network to make some predictions, https://www.mathworks.com/help/deeplearning/ref/dlnetwork.predict.html

más de 1 año hace | 0

Respondida
What are the differences between fitrnet and trainnet?
Unlike fitnrnet, the L-BFGS algorithm used by trainnet does not seem to use a line search. That might have had something to do w...

más de 1 año hace | 0

Respondida
A simple question regarding image processing
I see that some pixels are darker than others, but no pixels that are jet black. If you have some criterion to decide which pixe...

más de 1 año hace | 0

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Respondida
define an objective function with user defined number of variables in fminunc()
The only way fminunc knows the number of variables is by looking at numel(x0) where x0 is the initial guess: xmin = fminunc(fun...

más de 1 año hace | 2

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Respondida
Deconvolution of two different Gaussians
If you know a priori that all the signals are Gaussians, then deconvolution would not be the best way to recover espread. You kn...

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Respondida
Displaying a struct containing gpuArray fields takes an extremely long time in R2024b
Here's a possible workaround: c.a=1; c.b=2; c.data=gpuArray.rand(100,100,100,'double'); tic; c, toc c = struct with...

más de 1 año hace | 0

Respondida
Finding a circle in a 2D array
load P BW=median(P(:))-P>50; BW=bwpropfilt(bwareaopen(BW,100),'Eccentricity',6,'small'); c=vertcat(regionprops(BW,'Cent...

más de 1 año hace | 1

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Respondida
imerode/imdilate use convolution?
No, imdilate is a sliding window max() operation, which is nonlinear, and therefore not, in general, a convolution. Similarly im...

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Respondida
Take 3x3 nearest neighbours round centroids of all spots and find the median of their mean
sz=size(IM); centroidIdx=sub2ind(sz,y1,x1); T=combinations(1:3,1:3); delta=sub2ind(sz,T{:,2},T{:,1})'-(sz(1)+2); resu...

más de 1 año hace | 0

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