[R] mle
dpender
d.pender.1 at research.gla.ac.uk
Tue Feb 22 10:46:43 CET 2011
Hi,
I am looking for some help regarding the use of the mle function.
I am trying to get mle for 3 parameters (theta0, theta1 and theta2) that
have been defined in the the log-likelihood equation as theta0=theta[1],
theta1=theta[2] and theta2=theta[3].
My R code for mle is:
mle(Poisson.lik, start=list(theta=c(20,1,1), method="Nelder-Mead",
fixed=list(w=w, t1=t1, t2=t2))
But I keep getting the following error,
Error in eval(expr, envir, enclos) : argument is missing, with no default
I am trying to maximise theta starting at (20,1,1) over a fixed range of w,
t1 and t2.
Can anyone shed some light as to what is going on?
Thanks,
Doug
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