?nlm It does not seem to have a parameter 'data', so that is the cause of your error message.
On Fri, Nov 26, 2010 at 4:36 PM, Mike Gibson <megalop...@hotmail.com> wrote: > > > I want to change my parameter g to maximize the sum of my model. I keep > getting an unused argument error and I don't know why. Here are the details > of my problem. > > g<-0.2 #initial value for g > Qt<-exp(-g*tagdat$t) #model building > PTT<-Qt*Qt #model building > PT<-2*Qt*(1-Qt) #model building > P0<-(1-Qt)^2 #model building > pTT<-PTT/(1-P0) #model building > pT<-PT/(1-P0) #model building > lamda<-c(g=g) #make a list of values for my g parameter. > -sum(tagdat$N2*log(pTT)+tagdat$N1*log(pT)) #here is the sum of my model. > It works. > f <- function(g) sum(tagdat$N2*log(pTT)+tagdat$N1*log(pT)) #now I name my > model and make it a function called g > tag.fit<-nlm(f,p=lamda, data=tagdat, hessian=T) #this is where > I am stuck. I am running the nlm procedure but it keeps telling me I have > the unused argument of data=list. ??? > > Any help would be greatly appreciated. > > Mike > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem that you are trying to solve? ______________________________________________ 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.
