Displaying 1 result from an estimated 1 matches for "tp4643638p4643649".
2012 Sep 19
2
Warning Message: In if (deparse(params[[nm]][[3]]) != "1")
I am using the gnls procedure in nlme package to fit a nonlinear model as:
nl.fit<-gnls(Y ~ b0*exp(b1/X),
data = data1,
params=list(
b0~p1+I(p1^2)+p2+I(p2^2)+p3+I(p3^2)+p5+p6
b1~p8+p2+I(p2^2)+p3+p9+p10+p11),
start = c(25,0,0,0,0,0,0,0,0,-8.6,0,0,0,0,0,0,0),
weights=varPower(form =~ X)