All Forums  Origin Forum  Origin Forum  Nonlinear fit with three independent variables

Note: You must be registered in order to post a reply.
To register, click here. Registration is FREE!

Screensize: 640 x 480 800 x 600 1024 x 768 1280 x 1024 UserName: Password: Anti-Spam Code: Format Mode: Basic  Help  Prompt  Format: Font Andale Mono Arial Arial Black Book Antiqua Century Gothic Comic Sans MS Courier New Georgia Impact Lucida Console Script MT Bold Stencil Tahoma Times New Roman Trebuchet MS Verdana   Size 1 2 3 4 5 6   Color Black Red Yellow Pink Green Orange Purple Blue Beige Brown Teal Navy Maroon LimeGreen Message: * HTML is OFF * Forum Code is ON Smilies [quote][i]Originally posted by SWeise[/i] [br]Origin Ver. and Service Release (Select Help-->About Origin): Operating System: Origin 2019b, 9.6.5.169 (Academic) I want to perform a nonlinear fit with three independent variables. When I use "nonlinear surface fit", I can define the equation. The dialog tells me, that three independent variables are ok (four wouldn't work). But when I want to define the data input, I can only choose 3 data sets (two independent and one dependent variable). Do I miss something? Is there another fitting tool except "nonlinear surface fit" to perform the task? It is unfortunately no linear equation, but of the type r=A*x+B*xy+C*xy^2z. Thank you very much for your help! [/quote]   Check here to include your profile signature. Check here to subscribe to this topic.