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Stephan


934 total contributions since 2017

Knowledge means knowing where it is written...

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

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Answered
Hello. Is SimPowerSystem available in Matlab 2019a?
The toolbox was changed and the functions are now available in Simscape Electrical.

5 days ago | 0

Answered
Hi! How I can download matlab R2010a?
<https://www.mathworks.com/downloads/web_downloads/select_release?mode=gwylf>

6 days ago | 0

Answered
Saving a graph with edges and nodes
You can not save a workspace object in a *.m-file*. Use a *.mat-file* instead to save your graph. You can load this in other scr...

9 days ago | 0

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Answered
Where can I study more about scripts in Mat Lab.
you might want to look here: <https://de.mathworks.com/learn/tutorials/matlab-onramp.html?s_cid=learn_ONRAMP_BAN>

14 days ago | 0

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Answered
Fit y=m*x into a non lineardata
This forces b to be equal to zero - the value you are interested in is m(1): % Your data x = 0:10; y = [1.5 3 5 7 8 9 13 16 2...

25 days ago | 1

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Answered
automate the transfer of text files iteraton wise
name = "file_1.txt"; filelist = string(zeros(730,1)); diffusion = cell(730,1); for k = 1:730 number = string(k); f...

25 days ago | 1

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Answered
filter string in the string
str = 'this matlab is a good software, it is a version 9.4 which is equal to 2018a' str = char(str); idx = find((uint8(str)>=...

26 days ago | 1

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Answered
Reading Data from txt file with a unique FormatSpec
One way: A = reshape(double(replace(string(readcell('Test.txt')),["[[", "[", "]", "]]"],["", "", "", ""])),[],12) This uses th...

26 days ago | 0

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Answered
Solving a ODE in matlab
ode = @(t,y) y.^2-y.*0.1*cos(2.*t)-0.2*cos(2.*t); t=[0 8]; y0 = -1; [t,y] = ode45(ode,t,y0); plot(t,y)

26 days ago | 2

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Answered
n x 1 array, add row-wise
https://de.mathworks.com/help/matlab/ref/cumsum.html A = [1 3 4 5 3 8 3]' B = cumsum(A)

26 days ago | 0

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Answered
help to convert text file symbol into array
Assuming you import this as a string, you could use: a = "4c07b] IF hit state: 5 (S) valid:" b = char(a) c = b(:) which give...

26 days ago | 0

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Answered
Run a code for several values
Sounds like you might be interested in vectorization.

26 days ago | 0

Answered
write a function that takes any equation as an input
You might to want to achieve this: % Inputs xvals = 0:0.01:10; fun = @(x) x.^5 + sin(x); % call function res = splinecalc...

26 days ago | 1

Answered
How to extract specific images from a library of images?
You can construct a string array of the desired file names like follows: exceldata = [0,3,8,12,16,224]; filenames = string(100...

26 days ago | 0

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Answered
Solving a system of second order differential equations (coupled mass-spring system)
syms X1(t) X2(t) K f m1 m2 Y t EqX1 = diff(X1,2) == K*(X1-X2)/m1; EqX2 = diff(X2,2) == f + K*(X2-X1)/m2; [ODE,Vars] = odeTo...

1 month ago | 0

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Answered
Why INTLINPROG returns non-integer?
load intlinprogfail.mat % file attached intcon = 1:45; [x, ~, flag] = intlinprog(fdummy, intcon, [], [], Aeq, beq, lb, ub); r...

1 month ago | 1

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Answered
How to sort one column of a matrix
B = sortrows(A,-3)

1 month ago | 0

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Answered
comparing the two arrays
x1=[1,2,3,2,0,3,4,3,5,4,5,6,8]; x2=[3,0]; res = zeros(1,numel(x2)); for k = 1:numel(x2) res(k) = sum(ismember(x1,x2(k)...

1 month ago | 0

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Answered
matlab code for lagrange method?
Hint: Answers has a search function. We will not write your code - learn from examples: <https://de.mathworks.com/matlabce...

1 month ago | 0

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Answered
Selecting data in an array based on a logical value array?
<https://de.mathworks.com/help/matlab/math/array-indexing.html#MatrixIndexingExample-3>

1 month ago | 1

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Answered
Optimization of equation with 3 variables
<https://de.mathworks.com/help/optim/ug/fmincon.html>

1 month ago | 1

Answered
check if random numbers( 5x5) generated are greater than (1x5)
Here is an example using <https://de.mathworks.com/help/matlab/ref/gt.html gt (greather than)> and <https://de.mathworks.com/hel...

1 month ago | 0

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Answered
how do i get Matlab compiler for home users?
At the Moment there is no way to get this with a home license. You can only hope that TMW will someday change his policy - or yo...

2 months ago | 0

Answered
how with ode45 order we can solve a switching problem?
<https://de.mathworks.com/help/matlab/math/ode-event-location.html>

2 months ago | 0

Answered
My gamultobj nonlinear constraints are being ignored
Get rid of the <= operators, they make the result of myCon a logical zero vector, which brings trouble. Use this instead, to cal...

2 months ago | 2

Answered
Working with table.
Your_Table_new = Your_Table(Your_Table.Recommeded_Working_Hours >= 3000,:);

2 months ago | 0

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Answered
Function "solve" returns a struct
syms a1 a2 q1 q2 eq = a1*cos(q1) + a2*cos(q1)*cos(q2) - a2*sin(q1)*sin(q2) == 0 sol = isolate(eq,cos(q1)) pretty(sol)

2 months ago | 0

Answered
MATLAB codeto python code conversion
There is no tool to do this in an automatic manner. To do this you can seither do (let) this by hand or you use the free Matlab ...

2 months ago | 1

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Answered
Showing years on x axis graph
<https://de.mathworks.com/help/matlab/ref/xticks.html>

2 months ago | 0

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