Dear Colleagues. I believe this should be a problem encountered by many:
nls( ) is a very useful and efficient function to use if we are just to display the estimated value on screen. What if we need R to store the estimated parameter in a variable? For example: x=rnorm(10, mean=1000, sd=10) y=x^2+100+rnorm(10) a=nls(y~(x^2+para),control=list(maxiter = 1000, minFactor=0.5 ^1024),start=list(para=0.0)) How to store the estimated value of para in this case, in a variable, say, b? It is easy to display a and find all the information. How ever, I need to fit a different set of x and y in every loop of my code and I need to store the estimated values for further use. I have checked both the online manual and several S-plus books but no example as such showed up. Your help will be highly appreciated! Best Wishes Yuchen Luo [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.