Make equation in Curve Fitting tool

I used the Curve Fitting tool to plot the relationship between x, y and z.

Could I get the equation corresponding to the graph above?

[dpb]

Use the "Save" feature and then the fit object will be copied into the workspace and you can query it for properties. See the doc on postprocessing for the methods/properties...

[Alex Sha]

How about the equation below:

z = p1*exp(p2/x+p3*y)+p4+p5*x*y;

Root of Mean Square Error (RMSE): 0.157691882577852
Sum of Squared Residual: 0.870335544083149
Correlation Coef. (R): 0.9793870899808
R-Square: 0.95919907202106
Adjusted R-Square: 0.955250595119872

Parameter	Best Estimate
----------	-------------
p1	100030.165298487
p2	-66.5201897439939
p3	-0.0404908844574984
p4	-0.331541416588136
p5	0.00106610586563368

Answer 1

[Divija Aleti]

As Alex stated, it will be possible to tune the parameters of a predefined model, for example, by using ‘poly23’ fittype, to fit a curve through given data and get the output equation.

Have a look at the following link for possible ways to fit a curve or surface to data:

https://www.mathworks.com/help/curvefit/fit.html

Output: