There's an extension to the package nlme using odesolve to estimate parameters of models defined by ODEs. It's called nlmeODE and has a home page here: http://sourceforge.net/projects/nlmeode/ ; it's on CRAN http://cran.r-project.org.
Reid Huntsinger -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Klaus Kaae Andersen Sent: Friday, May 20, 2005 7:12 AM To: [email protected] Subject: [R] Degradation model Dear list, I have a degradation model: dX/dt = * I(X2)*( k1*X(t) )/( X(t)+k2 ) where X(t) is concentration at time t, and k1 and k2 are parameters that I want to estimate. I(X) is a known inhibitor function. My questions is whether this is implemented or easily computed in any R package. I have searched the archives but without luck. Any help or comments on this would be appreciated, Klaus Andersen ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
