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specifying
2006 Oct 25
1
How to specify a constant in gnls{nlme}
Hi All,
I have question about speficifying a constant in gnls() from package nlme.
Here is a testing code:
#############
library(nlme)
x = exp( rnorm(100))
y = 1/(1+x) + rnorm(100)/10
plot( y ~ x)
fm1 = gnls( y ~ 1/(1+(x/v)^w), start=list( v=1, w=1))
a =1; b=1;
fm2 = gnls( y ~ a/(b+(x/v)^w), start=list( v=1, w=1)) #This won't wo...