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$parameters[1:3],0) What is same code in R? Thanks a lot. Duan
parameters' value
3 messages · Duan Zhigang, Douglas Bates, Jean Eid
"Duan Zhigang" <zduan1 at uthouston.edu> writes:
Hi, I am a new user of R. I am trying to use R to do some nonlinear modeling. However, I can not find how to get the parameters's value back.
Here is the code in S-plus: ycos1.nl <- nls(y ~ m +ac*cos(2*pi*f*t) +as*sin(2*pi*f*t), start=nl.st, trace=T) ## store model info after satisfactory model has been found cNL1 <- c(ycos1.nl$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
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