Perform iterations for the current fit session
X-Function not designed for Auto GetN Dialog.
nlfit 0; // update fit cuves and recalculate chisqr
nlfit 1; // do only one iteration
nlfit; // fit until converge
Please refer to the page for additional option switches when accessing the x-function from script
Iterates the fitting function in use. User can decide the times and method of iteration.
Here is a example of nonlinear fit. See this.