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Stephan


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1,210 2017 年以降の合計貢献数

Knowledge means knowing where it is written...

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

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

約9時間 前 | 0

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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...

約10時間 前 | 0

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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 ...

約12時間 前 | 0

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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 =...

1日 前 | 0

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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...

1日 前 | 0

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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...

1日 前 | 0

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

4日 前 | 0

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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_...

5日 前 | 0

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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...

5日 前 | 0

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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_...

5日 前 | 0

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

30日 前 | 0

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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 = ...

約1ヶ月 前 | 0

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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)] ...

約1ヶ月 前 | 0

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

約1ヶ月 前 | 0

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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;...

約1ヶ月 前 | 0

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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 ...

約1ヶ月 前 | 0

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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...

約2ヶ月 前 | 0

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

約2ヶ月 前 | 1

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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 .*...

約2ヶ月 前 | 0

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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"]...

約2ヶ月 前 | 0

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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...

約2ヶ月 前 | 0

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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...

約2ヶ月 前 | 0

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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ヶ月 前 | 0

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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ヶ月 前 | 0

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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ヶ月 前 | 0

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

2ヶ月 前 | 0

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Obtaining Information from Reinforcement Learning while Training
The reward of each training episode is stored in the trainsStats struct which is the output argument of the train function. Insi...

2ヶ月 前 | 0

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How to display Y, Cb and Cr components of an image?
I used the inbuild example file peppers_RGB_tiled.tif, which has no 4rd dimension that could be cleared, so i used a try catch b...

2ヶ月 前 | 0

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solve: Cannot find explicit solution but it have solutions, matlab's bug?
Congratulations, you have 1 solution of an infinite number of possible solutions - look to the borderline case of equal to: sym...

2ヶ月 前 | 0

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