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can we apply ode45 on .mat file

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Muhammad
Muhammad on 21 Dec 2023
Answered: Steven Lord on 21 Dec 2023
I have a data of 100x5 columns. can i apply ode45 solver on this data against my specfic initial conditions?
or what is the best way to apply ODE solver on the data?
  3 Comments
Muhammad
Muhammad on 21 Dec 2023
This data will only be used as a right of ODE like in SINDy algorithm and my associated system is discretized ODE
Torsten
Torsten on 21 Dec 2023
We cannot make sense of your problem description.
If you want to integrate the 5 columns, you can use "cumtrapz":
x = 0:0.1:2*pi;
y = sin(x);
Y = cumtrapz(x,y);
hold on
plot(x,Y)
plot(x,-cos(x)+1)
hold off
grid on

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Accepted Answer

Steven Lord
Steven Lord on 21 Dec 2023
Okay, so based on the keywords in the comment a quick Google search found this page. So is this your x matrix or your Θ matrix, using the notation from that page?
If it's your x matrix, are you looking for help in constructing the Θ matrix?
Or do you have both matrices and you're looking for something to perform the LASSO step? The lasso function in Statistics and Machine Learning Toolbox may be of interest to you.

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