hey guys, I got a problem when I tried to estimate parameters in a non linear function with restrictions. The function is: Y=a+(b+c*x)*exp(-d*x), given values of x and y. The least squares method is required and there are many restriction on a,b,c,d, such as a>10, a+b<19,b<3, d>0 and the starting values are given for c,d. how can I realize such estimation? or which package should i use? thanks a lot~~
Regards, James -- View this message in context: http://r.789695.n4.nabble.com/non-linear-estimation-tp2072136p2072136.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.
