RE: [R] Degradation model

From: Huntsinger, Reid <reid_huntsinger_at_merck.com>
Date: Sat 21 May 2005 - 00:50:54 EST


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: r-help-bounces@stat.math.ethz.ch
[mailto:r-help-bounces@stat.math.ethz.ch] On Behalf Of Klaus Kaae Andersen Sent: Friday, May 20, 2005 7:12 AM
To: r-help@stat.math.ethz.ch
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



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sat May 21 01:13:35 2005

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