Re: [R] MLE in R

Hello Liang, Besides looking at ?optim, you may also want to look into this nice working example www.mayin.org/ajayshah/KB/R/documents/mle/mle.html Regards, Francisco Francisco J. Zagmutt Vose Consulting 1643 Spruce St., Boulder Boulder, CO, 80302 USA www.voseconsulting.com Liang Wang wrote

Re: [R] MLE in R

Please read ?optim and about its arguments lower, upperBounds on the variables for the "L-BFGS-B" method. Uwe Ligges Liang Wang wrote: Hi, dear R users I am a newbie in R and I need to use the method of meximum likelihood to fit a Weibull distribution to my survival data. I use "optim"

[R] MLE in R

Hi, dear R users I am a newbie in R and I need to use the method of meximum likelihood to fit a Weibull distribution to my survival data. I use "optim" as follows: optim(c(1.14,0.25),weibull.like,mydata=mydata,method="L-BFGS-B",hessian = TRUE) My question is: how do I setup the constraints tha