Curve fitting data from a script model

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Maria Munoz
Maria Munoz 2016-12-1
评论： Star Strider 2016-12-1
Hello!!
I have some data that I need to fit. And I have a model with one variable that fits, but I would like Matlab to calculate the fit instead of doing it manually. But when I try to use fit, the fitted curve is far off... I hope you can help me!
The model calculates f for a given x and Mdot. f is also a [6x1]
x = [6x1];
FUN = fittype('model(x,Mdot)');
fo = fitoptions(FUN);
fo.StartPoint = [0.08*Msun/yr];
fit1 = fit(x,f,FUN)
plot(fit1,x,f)

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回答（1 个）

Star Strider
Star Strider 2016-12-1
We don’t have your data or your model. You may need one more parameter to fit your function to your data.
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Maria Munoz
Maria Munoz 2016-12-1
The model is a bit difficult to share, because there are a lot of constants and it calls other functions... But if you have any idea of why it doesn't work, something I could try, I really don't know... I would be forever thankful!
Star Strider
Star Strider 2016-12-1
I would like to help, but without your model and an explanation of it, and especially without knowing (and preferably having a mathematical model of) the process that created your data, there is simply no way to go further.
I will delete my Answer in a few minutes.

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