I have worked through the tutorial example FITEXMP3 and adapated it to my own function of 2 variables and 3 parameters. The question I have is, What are the limitations on (1) Number of independent variables, and (2) Number of parameters to be fitted?
When using the nonlinear curve fitter, the limitation on the number of parameters and/or datasets is interdependent. The relationship is as follows:
(number of parameters) * (number of datasets) < 200
For example, if you create a fitting function that contains 10 parameters, you can fit at most 19 datasets without equaling or exceeding the limitation.
If you are only fitting one dataset (the Fit Multiple Dataset checkbox is available on the Select Dataset (Action:Dataset) Page of the fitter), then you can have up to 200 parameters. I'm not aware of any limitation on the number of independent variables; there may be one, but I imagine it is not one that you will likely run into.
NLSF Limitations in Origin7
Posted - 04/22/2003 : 5:36:31 PM
