can we apply ode45 on .mat file

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?

[Steven Lord]

How specifically is this data related to the system of ODEs that you're trying to solve?

If your data was the following, what would be the associated system of ODEs?

x = (1:100).' + (200:204);

[Muhammad]

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

[Torsten]

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

Answer 1

[Steven Lord]

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.