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incubate
2001 Oct 01
1
Grouped Regression
...T2 74.8 405.5
ET2 112.0 382.6
ET2 149.7 361.8
ET2 187.4 347.7
To do a straightforward nls on the data, some code like this would be
necessary...
char<-read.table("O:/R_STH/L_TBA/P_IndSer/IntLive/Ilem_Research/Matt/Incubat
ion/Desorption Isotherms/RWork/DPIAds.txt", header=TRUE)
library(NLS)
test1<-nls(SorbedT~A + B/(1 + D*ExtrVol2), data=char, start=list(A=200,B=80,
D=0.003),trace=TRUE)
summary(test1)
Given this code, How do I alter it to group regression based on the factor
TimeTreat, and provide a compar...