Question

Preference settings for command line table display
In R2021b, tables display at the command line as below on the left, whereas in R2022a, it displays as on the right, in a collaps...

3 years ago | 1 answer | 0

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Why am I receive Fmincon error ?
x0 = ones(3,21);

3 years ago | 1

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How to select fields of a struct that contains certain string?
load table for i=1:numel(trial_table) s=trial_table(i).trial; [~,loc]=ismember({'1','2'},{s.message}); result(i)...

3 years ago | 0

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using lsqcurvefit for fitting the convoluted function to the data set
As a first pass, you should probably approximate the Fermi function by an ideal step function, so that the "convolved Gaussian" ...

3 years ago | 1

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Unable to solve nonlinear equation using fsolve as the message shows No solution found
You haven't shown how the optimization was executed. fsolve appears to work fine below: opt = optimoptions('fsolve', 'FunctionT...

3 years ago | 1

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How can we find the intersection between two planes in higher dimensions (4d space and above)?
In general, intersections of two hyperplanes would be expressed algebraically by a 2xN set of linear equations Aeq*x=beq. A geom...

3 years ago | 1

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How to find the orientation of the line of the intersection between two planes?
P1 =[177668442.453315 ,-102576923.076923, 0]; P2 =[ -102576923.076923 ,177668442.453315 ,-102576923.076923]; P3= [0, -1025769...

3 years ago | 1

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Defining and calling functions in matlab
function fx = wbl(X)

3 years ago | 0

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How do I save for loop plots to a figure directory?
One possibility: saveas(gcf, fullfile(OutputFigures, "FIG"+i) );

3 years ago | 0

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Why do I get different outputs for fsolve when I use different initial point?
Why do I get different outputs for fsolve when I use different initial point? Because you have local solutions. You need to cho...

3 years ago | 0

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Fminsearch for fitting models (unconstrained nonlinear minimization of rmse)
rmse= sqrt(sum((ydata-(c1./(1+exp(-a1-b1.*xdata))+c2./(1+exp(-a2-b2.*xdata))+d).^2))./numel(xdata));

3 years ago | 1

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How can I efficiently use an array of patterns to create figure titles?
One possibility: regNames = ["Anterior HPC" "Posterior HPC" "Amygdala" "Enthorinal Cortex" "Pararhinal cortex"]; pats = "u" + ...

3 years ago | 1

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2D matrix transformation (Brown-Conrady distortion model) fitting
You can use lsqcurvefit if you have the Optimization Toolbox.

3 years ago | 0

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Fzero giving weird answer
As you can see from the plot, the root lies quite close to solution, so fzero succeeded. If this violates your expectations, it ...

3 years ago | 0

Question

Why is it forbidden to call a superclass method from a subclass function of a different a name?
I tried the thing in the screenshot below, i.e, to call the super-class method getThis() within the sub-class method someFunc()....

3 years ago | 1 answer | 0

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How to find the line of intersection between the following two planes and plot the intersected line on the same two planes?
You can get the line of intersection in Dual Plucker Matrix form as follows: A=null([[P11;P21;P31],ones(3,1)]); %plane 1 B=...

3 years ago | 0

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Length of lower bounds is < length(x); filling in missing lower bounds with -Inf. Problem is unbounded
A=readtable('4times6249datacsv'); A=table2array(A); f=sum(A,2); Aeq =ones(1,4); beq = 1; lb = zeros(4,1) ; a = linpro...

3 years ago | 0

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Maximization problem in MATLAB Optimisation Toolbox
Will it work same here? Yes. Example: fun=@(x) -x^2; %maximize this xmax=fmincon( @(x) -fun(x) , 1) It worked!! But anoth...

3 years ago | 1

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Given a quadrilateral image, not necessarily a rectangle, how to find its top left point's x-y coordinate
You can use pgonCorners from https://www.mathworks.com/matlabcentral/fileexchange/74181-find-vertices-in-image-of-convex-polygo...

3 years ago | 0

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How to use Matlab Functions with Vector of Structures
m = min([struct.field1])

3 years ago | 0

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Defining objective functions appropriately
It depends what environment you are formulating the problem in. fmincon and fminunc will only minimize functions, so you cannot ...

3 years ago | 0

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Matrices multiplication (a*b)
By using a loop, and the definition,

3 years ago | 0

Question

Isn't it dangerous to allow Comma-Separated-List functionality in indexed assignments?
I have a function below called renamefields() which, as the name suggests, renames a desired subset of struct array fields as de...

3 years ago | 1 answer | 1

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How to get comlex root of an equation using fminbnd?
fminbnd is for minimzing over a 1D interval. It's not clear to me how you are defining 1D interval bounds for a number that does...

3 years ago | 0

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Issues in the constraint functions of the Optimization Problem solving
function [c,ceq]= area(x0) M=5; % x0=[5,8]; M2=m(M,x0(1)); M3=m(M2,x0(2)); M4=m(M3,(x0(1)+x0(2))); beta1=b(M,(x0(1)))...

3 years ago | 0

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collapsing rows of a cell array into a single cell
Data2=num2cell(Data,1); However, I wonder why you would want to do this. Matrices are usually faster to manipulate than cells, ...

3 years ago | 0

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Question

How many columns can the input to the JacobianMultiplyFcn have?
I am using the JacobianMultiplyFcn option of lsqnonlin. The documentation says that JacobianMultiplyFcn is to be a handle to a f...

3 years ago | 1 answer | 0

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fsolve with two variables in a loop
fun=@(z)[fx(z(1),T(j));fy(z(2),T(j))];

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Receiverd Signal and optimization
w=(hr'*Theta*G +hd')'; w=sqrt(P)*w/norm(w);

3 years ago | 0

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Split one table into multiple tables based on multiple variables without reordering.
T=readtable('Data - 2023-01-26_question'); G=findgroups(T(:,1:2)); I=(1:numel(G))'; splitTables = splitapply(@(i){T(i,:)}...

3 years ago | 1

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