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Stephan


Last seen: 1 day ago
1,213 total contributions since 2017

Knowledge means knowing where it is written...

Interested in:
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- Mathematical Modelling
- Improvement of my programming skills

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Answered
Subscript in figure WHAT AM I DOING WRONG?
<https://de.mathworks.com/matlabcentral/answers/157122-latex-interpreter-mean-bar-with-subscripts>

10 hours ago | 0

Answered
How get the Adjacency matrix from complete graph
Its trivial: A = ones(n) - diag(diag(ones(n))) or, more easy A = ones(n) - eye(n)

18 hours ago | 0

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Answered
basic error, help me
2 closing brackets missing, one '*' operator missing, one times use './' instead of '/': x = linspace(20,100000); y = 20*log1...

22 hours ago | 0

| accepted

Answered
Splitting an array up
use this before reshaping - it discards all data, you dont care about: x = x(:,1:40*2048)

1 day ago | 0

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Answered
How do I simplify the values of a function?
Can be done with symbolic toolbox - matlabFunction returns an anonymous function the way you want: syms x % known constants a...

1 day ago | 0

Answered
how can I write more than 1 objective in linprog line
You can not do this in linprog. See here instead: https://de.mathworks.com/help/optim/multiobjective-optimization.html If you ...

2 days ago | 0

Answered
How to permute binary numbers to a specific permutation
https://de.mathworks.com/help/matlab/ref/circshift.html F=[0 6 2 5 4 3 6 1]' A = dec2bin(F) B = circshift(A,1,2) gives: F =...

3 days ago | 0

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Answered
I need help fixing an error that pops up when running my code. "Undefined function or variable 't'.
Seee the code below: % [Car B] is traveling a distance d ahead of [Car A]. Both cars are traveling % at the same initial veloc...

3 days ago | 0

Answered
How to Create an Anonymous Function?
Try to write it in one line - i guess you use an older release of Matlab, that does not support the semicolon operator in a seco...

3 days ago | 0

Answered
Solving nonlinear second order diferential equation
%% Dados iniciais clear Massa_foguete_seco = 3000; % Kg Massa_combustivel_inicial = 3000; % kg Empuxo ...

6 days ago | 0

Answered
2D Histogram aus 2 Matrizen
Immer dann, wenn in A oder B eine 0 vorkommt, wird g_a oder eben g_b gleich Null. Wenn dann im nächsen Schritt versucht wird, H_...

6 days ago | 0

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Answered
population size of pso in matlab
You find it here: https://de.mathworks.com/help/gads/particleswarm.html?s_tid=srchtitle#budidgf-options The entry is in the th...

6 days ago | 0

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Answered
Storing values in a matrix
% Constants m=15; l=2; g=9.81; d=l/2; Io=(1/3)*m*(l^2); wn=sqrt((m*g*d)/Io); % function handle for linearized ode Vib_...

6 days ago | 0

Answered
ODE solvers - passing parameters
<https://de.mathworks.com/help/optim/ug/passing-extra-parameters.html>

1 month ago | 0

Answered
Matlab code for solving the following system equation
>> A = [2 1 5; 2 2 3; 1 3 3] A = 2 1 5 2 2 3 1 3 3 >> b = [5; 7; 6] b = ...

1 month ago | 0

Answered
How to solve a LPP when the A of linprog does not form a square matrix? I have 5 variables and 2 constraints.
% define all constraints A = [2, 2, 2, 0.6, 0.3; 0 0.04, 0.08, 0.09, 0.135; -eye(5)] b = [750, 30.75, zeros(1,5)] ...

1 month ago | 0

Answered
Solving Integral via MATLAB!!
syms a b z eq = (a-z) / ((1+z)*(b+z)); pretty(eq) sol = int(eq,z); pretty(sol)

1 month ago | 0

Answered
I can not plot values
syms Frx B m V1 V2 P1g P2g Frz alfa1 A1 V M Degree Fr W Weight m1=18;B1=1;P1g=0;V1=250;A1=1;alfa1=0; m2=m1;B2=B1;P2g=0;V2=250;...

1 month ago | 0

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Answered
Reinforcement Learning toolbox step function
The action the agent has choosen in the last step, usually has an impact on the environment. To let the step function know what ...

1 month ago | 0

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Answered
Why is this break not executing for the summation of pi
You never reach the value of your ratio of PrevSum/pie. I inserted 2 lines, the first saves the ratio in every single run of you...

2 months ago | 0

Answered
Making a row vector
v = [0:100 ,100:-5:0]

2 months ago | 1

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Answered
Solve equation in matlab
% rewrite equation to be equal to zero for fsolve and save as a function handle eqn = @(beta, L) cos(beta .* L) .* cosh(beta .*...

2 months ago | 0

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Answered
How to remove first consonant/consonant cluster and add it to the end?
Here is a little function, that can do this a = ["desk", "hello", "cup", "switch", "smith", "flowers", "angry", "decorations"]...

2 months ago | 0

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Answered
Shape Interpolation from csv
If the curvature is small enough compared to the distance between the original points, a little bit of analytical geometry might...

2 months ago | 0

Answered
Aligning columns in a matrix by padding with zeros
Under the assumption that you have at least one not corrupted column (here column 2), this might work: A = [1698 1696 1699 1...

2 months ago | 0

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Answered
How to avoid the ending drop of the movmean curve?
Use the Endpoints option: data = [386 379 295 238 159 190 384 402 552 347 463 259 412 481 523 589 611 479 320 403 642]; window...

2 months ago | 0

Answered
help with a vibratonal analysis code
m1=53;% Mass m2=62.096; k=3.096e+006 ; % Stiffness c=150; % Damping % 4 x 4 matrices disp('4 x 4 Mass matrix'); mt=[c,0,m1...

2 months ago | 0

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Answered
Not able to integrate a matrix.
You missed to define some values, for generality i setted them to be symbolic variables. Also integral is a function for numeric...

2 months ago | 0

Answered
Error using bar (line 172) X must be same length as Y.
Transpose y: x = 1990; y = [10 20 30]'; bar(x,y)

2 months ago | 0

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