Trouble with parameter determination of a model involving ODEs

Hello,

I'm trying to determine the parameters of a model. I have data in an excel format, listing the external characteristics of the model. I also have about 10 equations & odes. My script needs to solve for the 8 parameters. How would I go about implementing this into code? My thoughts so far are using a combination of ode45 and lsqnonlin.

Thanks

Answer 1

[abraham v]

I have 8 differential equation and 12 parameters.

When i tried to fit the paprameters using Isqcurvefit, it shows the error, Error in lsqcurvefit/objective (line 265)

F = F - YDATA;

how to rectify

which ode function in matlab can be used