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# Stephan

Last seen: Today Active since 2017

Knowledge means knowing where it is written... Interested in: - Optimization - Mathematical Modelling - Improvement of my programming skills

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How to choose between different licenses in MATLAB Online?
Im taking part in some online courses using Matlab. For this courses there is a license for Matlab online to work through the co...

4 dagar ago | 2 answers | 1

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Bar plot for two matrices together
https://de.mathworks.com/help/matlab/ref/bar.html?searchHighlight=bar&s_tid=srchtitle_bar_1#bug9u7m-1 Every column stands for a...

18 dagar ago | 0

How to plot an oscillator?
You can plot it 2 ways - i dont know what is "correct" for your case... For me both are correct - depending on what you want to ...

24 dagar ago | 0

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How can I solve in the error?
%clear all, clc; % clear all memory and variables x = linspace(-1,1); % create linear spacing in x-direction y = linspace(...

ungefär 2 månader ago | 0

calculate and fill an area between a line and a curve

ungefär 2 månader ago | 0

Can someone help me with the representation of the signals?
|*plot*| can not show one single point. Use at least 2 points for w to get a plot - or use |*scatter*|. w=0:10:500; To ...

ungefär 2 månader ago | 1

Function definitions are not permitted in this context.

ungefär 2 månader ago | 0

Receiving two outputs in function
To get multiple outputs from a function, you have to call it with multiple output arguments: [MY_nodeCrd,MY_edgeList]=ReadInput...

ungefär 2 månader ago | 1

why do I receive syms requires Symbolic math tool box
"why do I receive syms requires Symbolic math tool box?" - Simple: Because syms is part of the symbolic toolbox. If your license...

ungefär 2 månader ago | 1

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Answer double pendulum question usinf Rung-Kutta

ungefär 2 månader ago | 0

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equation for projectile motion

curve fitting using min-max optimization
You might want to start reading and trying here: <https://de.mathworks.com/help/curvefit/curvefitter-app.html>

You have to take both points into account to find a closed region: xcut1 = fzero(@(x)sqrt(x).*(12-x)./2 - 2+x, 0.5); xcut2 = f...

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Solve non-linear systems of equations to create matrix of coeffients and solve variable
If i assume, that you have a linear system, because i think, that x1...x4 does not mean x^1...x^4 then you are nearly there: sy...

Find light grey circle in greyscale image
Maybe this is an approach: img = imread('BinarizedImage_NewImage.JPG'); img2 = img; img2(img2<240) = 0; imshowpair(img,img2,...

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Solving cubic equation with imaginary numbers
s1 = 133.9457 + 253.416i; s2 = 133.9457 - 253.416i; s3 = 1339.457; syms s x_exactly = solve(0.00017493*(s-s1)*(s-s2)*(s-s3...

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combing rows into one row
I assume you want to have all values in a row vector: YouWant = reshape(MeanTemp(2:end,2:end),1,[]);

How can I mark a region in matlab ?
x1 = 0:0.001:1; y1 = x1.^2; y2 = 1 - x1; xcut = fzero(@(x)x.^2 - 1+x, 0.5); x = [x1(x1<=xcut), x1(end)]; y = [x1(x1<=xcut)....

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Change plot scale y axis
u21=[224 224 224 223 218 218 217]; beta1=[0 0.19 0.26 0.38 0.76 0.83 0.9]; plot(beta1,u21,'-*'); xlabel('beta') ylabel('U[V]...

Taking derivative and putting it equal to 0 to find theta.
syms s h S(x) fun = S(x) == (6*s*h) - ((3*s*s*cot(x))/2) + ((3*s*s*sqrt(3)*csc(x))/2) sdot = diff(fun,x) == 0

How to get the R2 value of fit?
ft = fittype('b*x^2+c*x+a'); load enso [curve, gof]=fit(month,pressure,ft,'StartPoint',[1,3,5])

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why is my code not working?
v=[2;0;1;9;0;1;3;0;1]; m=max(v); n=mean(v); f=@(x) m-(1/2).*x; % Vectorized g=@(x) 2.*x.^2-n; % Vectorized figure ezpl...

how to merge two figures
Have a look at: yyaxis

Finding out the minimum value position of a matrix
a=[1 2 3 4 5 10;2 3 5 6 1 12;2 6 4 5 7 16;10 2 1 4 5 20;2 3 1 4 9 12] % Here for the example row = 5, col = 1...3 ii = 5; % wa...

ungefär ett år ago | 0

Automatically fit a circle on an arc in image and to plot the circle in the image.
This example from the documentation appears to be suitable for your case.

mer än ett år ago | 0

MaxFunctionEvaluations not working in optimset() for fsolve()
See the documentation:

mer än ett år ago | 1

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Generation of a pair of random numbers satisfying a constraint
N = 10; r = sort(rand(N,2),2)

mer än ett år ago | 0

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Dimensions of arrays being concatenated are not consistent.
clc; clear all; close all; %% Parametri %% Inercija; {kg.m2} Juc = 2.6e-2; Jlc = 1e-3; %% Kruto...

mer än ett år ago | 0

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