Hi, I am a new user of R. I am trying to use R to do some nonlinear modeling. However, I can not find how to get the parameters's value back. Here is the code in S-plus: ycos1.nl <- nls(y ~ m +ac*cos(2*pi*f*t) +as*sin(2*pi*f*t), start=nl.st, trace=T) ## store model info after satisfactory model has been found cNL1 <- c(ycos1.nl$parameters[1:3],0) What is same code in R? Thanks a lot. Duan
"Duan Zhigang" <zduan1 at uthouston.edu> writes:> Hi, I am a new user of R. I am trying to use R to do some nonlinear > modeling. However, I can not find how to get the parameters's value > back.> Here is the code in S-plus: > > ycos1.nl <- nls(y ~ m +ac*cos(2*pi*f*t) +as*sin(2*pi*f*t), start=nl.st, trace=T) > > ## store model info after satisfactory model has been found > cNL1 <- c(ycos1.nl$parameters[1:3],0) > > What is same code in R?The preferred approach is to use the coef extractor function. This works in both R and S-PLUS. coef(ycos1.nl)
On Mon, 23 Feb 2004, Duan Zhigang wrote:> Hi, I am a new user of R. I am trying to use R to do some nonlinear modeling. However, I can not find how to get the parameters's value back. > > Here is the code in S-plus: > > ycos1.nl <- nls(y ~ m +ac*cos(2*pi*f*t) +as*sin(2*pi*f*t), start=nl.st, trace=T) > > ## store model info after satisfactory model has been found > cNL1 <- c(ycos1.nl$parameters[1:3],0)cNL1 <- c(ycos1.nl$m$getPars()[1:3],0)> > What is same code in R? > > Thanks a lot. > > Duan > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html >