cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
  • JMP will suspend normal business operations for our Winter Holiday beginning on Wednesday, Dec. 24, 2025, at 5:00 p.m. ET (2:00 p.m. ET for JMP Accounts Receivable).
    Regular business hours will resume at 9:00 a.m. EST on Friday, Jan. 2, 2026.
  • We’re retiring the File Exchange at the end of this year. The JMP Marketplace is now your destination for add-ins and extensions.

Discussions

Solve problems, and share tips and tricks with other JMP users.
Choose Language Hide Translation Bar

Curve fitting on Data with three variable X,Y,Z

I have data with 3 variables X,Y,Z and i want to fit a model like ...
Y= a(x) + b(z)+c,
X and Z may have some powers (n) also.How to do it? Please guide
1 ACCEPTED SOLUTION

Accepted Solutions
ms
Super User (Alumni) ms
Super User (Alumni)

Re: Curve fitting on Data with three variable X,Y,Z

Use the "Fit Model" platform. Add column Y to "Y" and columns X and Z to "Model Effects". To add powers of independent variables choose "Polynomial to Degree" under the "Macros" roll list. When you're done just hit "Run Model".

View solution in original post

3 REPLIES 3
ms
Super User (Alumni) ms
Super User (Alumni)

Re: Curve fitting on Data with three variable X,Y,Z

Use the "Fit Model" platform. Add column Y to "Y" and columns X and Z to "Model Effects". To add powers of independent variables choose "Polynomial to Degree" under the "Macros" roll list. When you're done just hit "Run Model".

Re: Curve fitting on Data with three variable X,Y,Z

Is there a way to determine the resulting formula? Will this same setup work for surface fitting?

Re: Curve fitting on Data with three variable X,Y,Z

Under the top red triangle, under Save Columns, you can select Prediction Formula option.

Recommended Articles