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Hi, i have a data set and i want to find the best equation can describe the data trend. Cftool need an equation to calculate the fit but i don't know which equation describe better my data; there is a tool or script that can ound the best equation.

Thanks

Alex Sha
on 10 Feb 2021

Hi, Isac, for time_1 series, one point is miss written? "36.5468 -2.72657737722164" should be "36.5468 -0.72657737722164", if so, refer to the result below:

y=A2+(A1-A2)/(1+exp((x-x0)/dx))+p1*exp(x*p2+p3/x)+p4*x;

Root of Mean Square Error (RMSE): 0.0199485805235078

Sum of Squared Residual: 0.0656610677089744

Correlation Coef. (R): 0.999763315428711

R-Square: 0.999526686877008

Parameter Best Estimate

---------- -------------

a2 -0.94962007323826

a1 0.0535110752630396

x0 337.617289679719

dx -39.219494340785

p1 -1.70924446590519

p2 0.0011217021565316

p3 -218.35619640782

p4 0.0059970024350561

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