Stephan
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Knowledge means knowing where it is written... Interested in: - Optimization - Mathematical Modelling - Improvement of my programming skills
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Contribute at least one answer each month for 36 consecutive months
Awarded to Stephan on 02 Apr 2021
Obtain 50 solvers for a problem you have created
Awarded to Stephan on 11 Dec 2020
Solve all the problems in Introduction to MATLAB problem group
Awarded to Stephan on 28 Jan 2019
Your submissions were downloaded 10 or more times in a month
Awarded to Stephan on 01 Nov 2019
Publish your first review
Awarded to Stephan on 09 Oct 2019
Publish your first submission
Awarded to Stephan on 09 Oct 2019
Accept 5 answers given by other contributors
Awarded to Stephan on 11 Oct 2018
100 of your answers have been accepted
Awarded to Stephan on 04 Sep 2018
Answer 10 questions that were unanswered for more than 30 days
Awarded to Stephan on 22 Jun 2018
Be the first to solve a problem
Awarded to Stephan on 24 Apr 2018
Create a problem
Awarded to Stephan on 24 Apr 2018
Feeds
optimization with two-part value range
You could try to define 2 variables x1 and x2 as the solution. x1 is an integer that assumes either 0 or 1 and x2 corresponds to...
4 månader ago | 0
| accepted
Genetic Algorithm 'bitstring' not accepting constrains
Considering this hint in the documentation, you should use the integer condition for the corresponding variables and set the lim...
mer än ett år ago | 0
Question
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...
mer än ett år ago | 2 answers | 1
2
answersBar 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...
mer än ett år 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 ...
mer än ett år ago | 0
| accepted
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(...
nästan 2 år ago | 0
calculate and fill an area between a line and a curve
A similar discussion here: <https://de.mathworks.com/matlabcentral/answers/1870667-i-got-the-problem-with-polyshape-please-help...
nästan 2 år ago | 0
| accepted
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 ...
nästan 2 år ago | 1
Function definitions are not permitted in this context.
https://www.mathworks.com/matlabcentral/answers/467833-error-function-definitions-are-not-permitted-in-this-context?s_tid=srchti...
nästan 2 år 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...
nästan 2 år 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...
nästan 2 år ago | 1
| accepted
Answer double pendulum question usinf Rung-Kutta
Have a read here: <https://de.mathworks.com/help/symbolic/animation-and-solution-of-double-pendulum.html>
nästan 2 år ago | 1
| accepted
equation for projectile motion
This might be helpful: <https://de.mathworks.com/matlabcentral/answers/431384-write-a-script-which-will-calculate-the-trajectory...
nästan 2 år ago | 0
curve fitting using min-max optimization
You might want to start reading and trying here: <https://de.mathworks.com/help/curvefit/curvefitter-app.html>
nästan 2 år ago | 0
I got the problem with polyshape, please help me
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...
nästan 2 år ago | 0
| accepted
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...
nästan 2 år ago | 0
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,...
nästan 2 år ago | 1
| accepted
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...
nästan 2 år ago | 0
| accepted
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,[]);
nästan 2 år ago | 0
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)....
nästan 2 år ago | 0
| accepted
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]...
nästan 2 år ago | 1
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
nästan 2 år ago | 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])
nästan 2 år ago | 0
| accepted
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...
nästan 2 år ago | 0
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...
nästan 3 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 3 år ago | 0
MaxFunctionEvaluations not working in optimset() for fsolve()
See the documentation:
mer än 3 år ago | 1
| accepted
Generation of a pair of random numbers satisfying a constraint
N = 10; r = sort(rand(N,2),2)
mer än 3 år ago | 0
| accepted
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 3 år ago | 0
| accepted
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