can we apply ode45 on .mat file

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Muhammad 2023-12-21

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回答： Steven Lord 2023-12-21

采纳的回答： Steven Lord

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?

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Muhammad 2023-12-21

This data will only be used as a right of ODE like in SINDy algorithm and my associated system is discretized ODE

Torsten 2023-12-21

在 MATLAB Online 中打开

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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Steven Lord 2023-12-21

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https://ww2.mathworks.cn/matlabcentral/answers/2063052-can-we-apply-ode45-on-mat-file#answer_1375892

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.