Answered
Error using trainNetwork - possible change with Matlab release?
Convert the data to cell array form. XTrain=num2cell(Xtrain,[1,2,3]); XTrain=XTrain(:); YTrain=num2cell(YTrain); YTr...

29 dagar ago | 0

Answered
Need to fit a curve to some data points
x = [1 2 100]; y = [55 22 0]; ylog=log(y+eps); p=polyfit(x,ylog,2); f=@(x) exp(polyval(p,x)); %The fitted function ...

ungefär en månad ago | 0

Answered
Need to fit a curve to some data points
This uses the fminspleas downloadable, x = [1 2 100]; y = [55 22 0]; flist={@(p,x)1./(x-p(1)).^p(2)}; [p,A]=fminspleas(f...

ungefär en månad ago | 0

Answered
Discretizing a column array, and performing operations on elements of another column array of the same length that lie in the same bins as the original one
G=findgroups( discretize(Z,edges) ); Fbinned = splitapply(@(z) mean(z,1) , F, G);

ungefär en månad ago | 0

Answered
How to restrict tensorprod (with contraction) to only give certain results?
No, you cannot. pagemtimes is the appropriate solution.

ungefär en månad ago | 0

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Answered
different results with fmincon
function [c,ceq] = nonlcon(x,B,v) [~,difference]=fun(x,B,v); c=max(difference)-0.001; ceq=[]; end

ungefär en månad ago | 0

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Answered
Transform coordinates into pixel
Use getframe and writeVideo like in this example: https://www.mathworks.com/help/matlab/ref/videowriter.writevideo.html#mw_6dab...

ungefär en månad ago | 0

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Answered
Extracting tables within a cell.
when try to run a loop to extract these elements and have them written out the loop isn't going past the first cell and only re...

ungefär en månad ago | 0

Question


Why don't getframe RGB codes agree with plotted polyshape RGB codes?
In the code below, I have computed the RGB color code of the square as seen in both a polyshape plot (polyshapeRGB) and as seen ...

ungefär en månad ago | 1 answer | 0

1

answer

Answered
Locate two neighboring nodes in space so as to divide the matrix into two
load xydata xy %Original 3D data mapped to 2D xy=xy(tspsearch(xy,5),:); %tspsearch is on the file exchange P=polyshape(xy,...

ungefär en månad ago | 0

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Answered
Loading multiple structure from a folder
It is because not all of the sub-structures mydata(n).data have the same fields. If you contest that, attach the mydata variable...

ungefär en månad ago | 0

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Answered
Can a ROI shape (ie. a Rectangle made by drawRectangle()) be a property of a class?
You need to specify the complete class name: classdef device properties tag string shape images.ro...

ungefär en månad ago | 0

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Answered
How to create struct from fieldnames and values cell arrays for code generation ?
Does it support transpose for normal arrays? If so, then you might be able to do, list_fields = {'a'; 'b'; 'c'; 'd'}; % the fu...

ungefär en månad ago | 0

Answered
Four-parameters optimization of a 1D function: wrong values
I would recommend using fminspleas, https://www.mathworks.com/matlabcentral/fileexchange/10093-fminspleas with INLP=[p2,p3,p4...

ungefär en månad ago | 0

Answered
Solve for A matrix in Ax = 0
n=numel(x); mask=tril(triu(ones(n),-1),+1); %tridiagonal mask A=optimvar('A',[n,n]); prob = eqnproblem; prob.Equation...

ungefär en månad ago | 0

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Answered
negative value structural similarity index
A negative SSIM value means the values in those regions tend to be negatively correlated. When X goes low, then Y tends to go hi...

ungefär en månad ago | 0

Answered
How to handle imagedatastore when input and response have different dimension?
Modify the trntf_input, trntf_label datastores' ReadFcn so that when it reads in the image, it wraps it in a 1x1 cell array. S...

ungefär en månad ago | 0

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Answered
How to plot 3D plane of surface with 3 coordinates data?
You can use planarFit, from this FEX download, https://www.mathworks.com/matlabcentral/fileexchange/87584-object-oriented-tools...

ungefär en månad ago | 1

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Answered
Cure fitting - lsqnonlin
I initially inputted my guess, lower bound, and upper bound with the true optimized values obtained from a published paper. Surp...

ungefär en månad ago | 1

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Answered
What would be the equation of the following surface?
You could try fitting a 2D Gaussian surface to it, e.g., with this FEX download, https://www.mathworks.com/matlabcentral/fileex...

ungefär en månad ago | 0

Answered
Finding Transformation Matrix of a viewer3d object
I think the 3x4 camera projection matrix P would be, h=gca(); camz=h.CameraTarget-h.CameraPosition; camy=-h.CameraUpVector; ...

ungefär en månad ago | 1

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Answered
Uploading .mat files that contain nested structs into a datastore
This example shows how to use a fileDataStore to read partial data from a .mat file https://www.mathworks.com/help/matlab/ref/m...

ungefär en månad ago | 0

Answered
Which optimization tool should be used for solving my convex optimization problem?
If, as you seem to, you have a non-quadratic (and therefore also nonlinear) convex objective function, then you must use fmincon...

ungefär en månad ago | 0

Answered
Fixed-distance of legend outside plot axes
is there any "simple" parameter (i.e., not position) which controls the vertical distance between the legend box and the upper e...

ungefär en månad ago | 1

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Answered
the arc using the chord
Assume the chord is of length L and, with no loss of generality, assume also that it is aligned with the x-axis with end points ...

ungefär en månad ago | 1

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...

ungefär en månad 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...

ungefär en månad 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...

ungefär en månad ago | 0

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

ungefär en månad 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...

ungefär en månad ago | 0

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