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**Feeds**

Using dlarray with betarnd/randg

Random number generation operations do not have derivatives in the standard sense. You will have to define some approximate deri...

5 giorni fa | 0

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Degrade image with known MTF to another desired MTF

sfrmat3 is 3rd party code, so nobody here knows what it is doing. I suspect at least part of the problem is that img_blurred is ...

5 giorni fa | 0

| accettato

Update a value in a struct in another function

You must return the modified myStruct from myUpdate(): myStruct.myLength = 1 myStruct = myUpdate(myStruct) function myStr...

5 giorni fa | 0

Deep learning numerical regression, no images, custom loss function

I don't know what kind of hidden layer architecture you would want for such an application, but the network below (layer graph a...

5 giorni fa | 0

Why are the components of the two eigenvectors not continuous and smooth, when the underlying data is continuous and smooth?

Note that eigenvectors are not generally continuous functions of the matrix entries, as shown in this old example from J.W. Give...

8 giorni fa | 1

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How to speed up my code (computing jacobian)

You can use equationsToMatrix to obtain the Jacobian. Depending on what you are doing, you might then convert the matrix to doub...

10 giorni fa | 0

How to distinguish pressing cancel vs entering an empty string in inputdlg?

However, this does not distinguish between meaningfully enterring an empty string and pressing cancel/x. It should. Hitting ok...

11 giorni fa | 0

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fminunc limit step size

No, there is no way to limit the stepsize, but you shouldn't be using a random initial point. That is never a good idea.

11 giorni fa | 0

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How do I remove outliers in data so that vectors are of the same length for plotting?

Perhaps something like this, [Y,discard]=rmoutliers(Y); X(discard)=[];

14 giorni fa | 1

| accettato

inv(A)*B*inv(A) or A\B/A, which is more accurate for a full rank A and half rank B

I tried both inv(A)*B*inv(A) or A\B/A, resulting in very different results for a gradient descent algorithm. From this, it woul...

14 giorni fa | 0

Accessing data from same variables within different tables in a structural array

fcn=@(p) interp1( p.data.TimeCooling , p .data.TempCore, timepoints(:)); TempCore_Lookups= cell2mat(arrayfun(fcn,p,'un...

15 giorni fa | 0

| accettato

One function is greater than other

Let us reorganize the inequality as, Since log(z)>0 in the given domain of z, this implies which in turn implies that...

15 giorni fa | 0

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Finding accurate inverse of binary circulant matrix

We don't know what it is that you consider improper about the results of inv(). The test below indicates to me that everything i...

15 giorni fa | 0

Proving one function is greater than other?

Make the change of variables and rearrange the inequality as, Since is a convex function on such that >0 and , it read...

16 giorni fa | 0

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Function to trainNetwork returns an unexpected error

Your X_train and y_train data were in some weird format that trainNetwork cannot recognize. Try this instead, Xdata = num2cell(...

17 giorni fa | 0

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orthogonal projection of 3D nodes onto a 2D plane

You should post questions about a FEX file on the submission's FEX Discussion forum, since only its author is likely to have the...

17 giorni fa | 0

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Surf on a cylinder

% Step 1: Create the heatmap data % Example heatmap data heatmapData = peaks(50); % Replace this with your actual heatmap dat...

17 giorni fa | 0

create a 3D smoothing with csaps (or similar)

load curve_1 cc = curve_1; %or curve_2 x = cc(:,1); y = cc(:,2); z = cc(:,3); t=linspace(0,1,height(cc)); tu=linspace(0...

18 giorni fa | 1

How to train a vector multiple-input multiple-output network

You have only entered one InputDataFormat. The error message is telling you that you need two of them, e.g., options = training...

19 giorni fa | 0

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Create different interpolation steps in a column

newy=[1:10,12:2:30, 50:50:500]; newdata=interp1(y,data,newy);

21 giorni fa | 0

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lambda in fmincon Interior-Point Algorithm with Analytic Hessian

How come it is an input to the function hessinterior? Because both x and lambda are computed iteratively. The solver therefore...

21 giorni fa | 0

Fitting a function with constraints

You can use a custom model for each case: ascending: The minimum y-value must be at the first x-value g = fittype( @(a, t, c, ...

21 giorni fa | 0

Solve ill-conditioned linear systems

Ill-conditioning is a property of the problem, not the method of solution. You cannot overcome it with any particular choice of ...

21 giorni fa | 0

Calculations for Each Table in a Cell

for i =1:numel(CoPyData) Trial = CoPyData{i}; CoPv_y = diff(Trial.Displacement)./diff(Trial.Time); CoPv = [...

22 giorni fa | 0

| accettato

find the inflection point of a curve 3D (set of nodes) in matlab

You can use csaps to fit a smoothing spline to the points and then fnder to differentiate the curve and observe curvature change...

22 giorni fa | 0

| accettato

How to put 3D array data into mesh grid and find grid cell index of a cube enclosing a given point?

It would be much simpler and more efficient to skip the meshgrid altogether and use discretize. i=discretize(px,x); j=discret...

22 giorni fa | 0

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How to fit polygon to irregular set of points with only vertical and horizontal edges?

You will need to use a Traveling Salesman Problem solver to sort the vertices. There are a number of them on the File Exchange. ...

22 giorni fa | 1

| accettato

Complex value computed by model function, fitting cannot continue. Try using or tightening upper and lower bounds on coefficients.

fminspleas from this FEX download, https://www.mathworks.com/matlabcentral/fileexchange/10093-fminspleas is helpful for these...

22 giorni fa | 0

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