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please can you help me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I have a non linear curve from a bending test, how may I know which equation would be suitable for data fitting?

Thank you for this tutorial. My question is, how to fit an equation to the data gathered during an experiment?

Thanks for the tutorial, it helped :) Do you know how can I find the minimum of objective function (ds) after finding optimal parameters?

can I fit it by using a double integral equation?

Sir, can you please elaborate this method for a system of ODEs

good job

please explain again how you took the values of C3 & C4

Hy. Very useful. The problem is that the results are very sensible to the initial guess for the parameters to be estimate. Maybe it's just for my function that i adjust using your scripts as example. What is to be done to get the same results no matter what initial values are adopted?

I am doing a curve fit to data using fminsearch. Unfortunately the fit does not converge. Can you please suggest alternatives?

Fminsearch has an error

Very very helpful

Hi, I have this eq. df/dt=f(n+5)-f(n)/T, T is the time (data) and f the frequency(data). I want to use the window of 100ms. How can I achieve that with a curve fitting? I need to get df/dt .

can you advice me : I have a set of data i want to plot it in points then find the best fit of this data using a function I have, but i dont have a fixed range and this initial guess , because i want to make it with GUI and the user can upload different set of data every time. the fitting equation we have but there is one variable in this function we need to calculate it according to our curve ...is it possible

how to fit two functions with same parameters in matlab. Plz help me in this regard

I couldn't download the files, how can l do it

I get this error using you layout for my program: Assignment has more non-singleton rhs dimensions than non-singleton subscripts Error in fminsearch (line 200) fv(:,1) = funfcn(x,varargin{:}); Error in Lab_Report_3 (line 33) C = fminsearch(@ds,[18 0.017 -3.1 18])

can you again elaborate the values of C1, C2, C3and C4

Can you make a video showing the confidence interval for the curve fit ?

Hello Roberto, are you able to show me how to apply it for a circle fitting using least-squares method?

Thanks a lot....Such a beautiful Explanation. !!

Hi, I have a polynomial SUM equations, where my goal is to calculate the 'n' value for the polynomial function, and observe 'n' equals to what number gives me a better fitting to my data set. My question is if this is achievable using Matlab?

What if the equation itself is in a differential form?

Thank you very much! I have't realize it need to import by column!

This helped a lot. Thanks

Thank you Roberto, this was very helpful!