Answered
Unable to perform assignment because the size of the left side is 1 by 1 and the size of the right side is 1 by 2
You cannot do this - x=[1,2,3], x(1)=[5,6] %left side 1x1. right side 1x2

3 years ago | 0

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Answered
how to plot 100x100 data set
X=rand(100); Y=rand(100); scatter(X,Y);

3 years ago | 0

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mask a matrix based on values in two arrays
A=accumarray([u,v],1,[100,100]); k=ones(2*padu,2*padv); mask=conv2(A,k,'same');

3 years ago | 0

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how can i change the value of a variable with a slider in matlab designer?
Here is a doc page talking about the general process of writing component callbacks in appdesigner. In this particular section, ...

3 years ago | 0

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Minimise memory requirements when importing many images
Why is it better to use NaNs instead of zeros? A value of 0 doesn't conflict with anything because all of your nontrivial values...

3 years ago | 0

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How to code binary Fibonacci sequence?
"where the successive elements of the sequence are obtained as the concatenation of the two previous ones" No, see - https://e...

3 years ago | 0

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Question

A*1 and A+0 could be faster.
Regardless of the size of a matrix A, operations A*1 and A+0 should be very fast. A simple pre-check would detect if one of thes...

3 years ago | 1 answer | 1

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Answered
How to call a function with vector input in the fit type function?
SCR has to be a 1D function of the independent variable nu, meaning it has to give valid output when nu is a scalar. That is not...

3 years ago | 1

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What is the recommended way to pass long list of parameters between main workspace and function?
Do not use load/save to introduce undeclared variables in your workspace. This can have unexpected effects as described in this ...

3 years ago | 0

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Converting a system of coordinates
You cannot do a 3D coordinate conversion from a single 2D camera measurement. You need at least 2 cameras. If you have 2 cameras...

3 years ago | 0

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How to find the index of the first absolute minimum entry of a matrix
A=[5,7,0.5,5 ; 2,1,4,1 ; 1,6,7,0.5], [value,index]=min(A(:)) [Iindex,Jindex]=ind2sub(size(A),index)

3 years ago | 0

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Answered
How to take double integral of a function matrix?
syms x y a=1; b=1; t=1; E=100/72; v=0.2; x1=0; x2=b; x3=b; x4=0; y1=0; y2=0; y3=a; y4=a; B1 = [y-y4;0;x-x2]; B2 = [0;x-x2;...

3 years ago | 0

Answered
define nonlcon in fmincon
function [c, ceq] = mycon(x) ceq=[]; c(1) = -nonlinearfunction1 % Compute nonlinear inequalities at x. c(2) c(3) ...

3 years ago | 0

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Answered
multi array vectorization problem (reformulated)
% init A = [ -0.8013 -0.4981; -0.2278 -0.9009]; t = 0:0.01:1e2; tic; % eigen space [V,D]=eig(A,'vector'); D = resh...

3 years ago | 1

Question

Since when has it been possible to dot-index the output of a class method?
Since when has it been possible to directly dot-index the output of a class method call, like this - classdef myClass p...

3 years ago | 1 answer | 1

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Answered
How to formulate the following matrices?
Why not just - T=zeros(3,3,n); for i=1:n T(:,:,i) = [cos(theta(i)) -sin(theta(i)) x(i) sin(th...

3 years ago | 3

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Finding close-to-linear solution
Using fsolve inside of fsolve is a doubtful-sounding thing to do. Why not just combine the equations from solveE with the equati...

3 years ago | 1

Answered
Input multiple arrays into function
Simpler example, L2 = [0 1/2 1/3 0 0 0 0; 1/3 0 0 0 1/2 0 0; 1/3 1/2 0 1 0 0 0; 1/3 0 1/3 0 1/2 0 0; ...

3 years ago | 0

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Answered
Problem with ploting exp function
If I had to guess, you have x and y reversed. [X, Y] = ndgrid(x, y); surf(X, Y, t(X,Y));

3 years ago | 1

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Multiple fminbnd errors with a parametrized function
Here is a symbolic method, if that's what you wanted. syms t f(t) f(t) = exp(cos(t)) - sin((3^(1/2)*sin(t))/3); vpasolve(di...

4 years ago | 0

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how to read multiple column data from excel sheet as a particular variables and use them as input other formula calculations in multiple itrations
Look at readmatrix(), readvars(), readtable(), etc...

4 years ago | 0

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Condensing code cannnot figure out easier function to use
threshold=30; %don't call this "max" blocklen=300; difference=rand(1,9268); N=numel(difference); Nc=ceil(N/blocklen)*blo...

4 years ago | 0

Question

How do I enable a user to link his Matlab license?
I have recently become a Matlab license administrator for my organization. I have a user who is trying to link his license to hi...

4 years ago | 0 answers | 1

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Answered
How can I set max & min value but maintain the curve trend?
yourSignal = rescale(yourSignal)

4 years ago | 0

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Answered
Bidirectional property and method definition with classes
If updatevalues is false, update properties normally (no links with other properties) <-- this means I cannot use the Dependent ...

4 years ago | 0

Answered
Plot line with points at given distance
This may help, https://www.mathworks.com/matlabcentral/fileexchange/34874-interparc

4 years ago | 1

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Doing an example find the optimal state and optimal control based on minimizing the performance index, Fmincon error of scalar value
Do as the error message says. Test your cost function on its own and make sure it returns a scalar value before applying fmincon...

4 years ago | 0

Answered
3-d order derivative
If the points are too close together, the difference between neighbours will be so small as to be dominated by floating point er...

4 years ago | 1

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Optimise a reference that cuts my curve into 2 equal sections
midline = trapz(x,y)/(max(x)-min(x))

4 years ago | 0

Answered
Solve an equation not getting a result
>> solve(increment1==((1/3)*(k/(1+evide0))*((x-s1(i-1))/x))+((1/3*G)*(x-s1(i-1))) ,x) ans = -2.6278e-06

4 years ago | 0