Displaying 1 result from an estimated 1 matches for "m0sulf".
2010 Mar 25
0
help with breaking loops used to fit covariates in nlme model building procedure
Dear All
I'm attempting to speed up my model building procedure, but need some help with the loops I've created...please bear with me through the explanation!
My basic model call is something like:
m0sulf.nlme<-nlme(conc~beta0*exp(-beta1*day)+beta2*exp(-beta3*day),
data=m0sulf,
fixed=(beta0+beta1+beta2+beta3~1),
random=pdDiag(beta0+beta1+beta2+beta3~1),
start=c(beta0=-300,beta1=15, beta2=300,beta3=0.5)...