Re: [R] 3-parametric Weibull regression

2012-01-31 Thread Pfrengle Andreas (GS-SI/ENX7)
Hello Terry, thank you for your help. I've tried your suggestion now and worked out the following code. What I forgot to mention in my last mail is that I have interval-censored data (I'm testing with discrete increasing fluid-volumes). I would be thankful if you reviewed my solution: myfun <-

Re: [R] 3-parametric Weibull regression

2012-01-27 Thread Terry Therneau
--- begin included message --- Hello, I'm quite new to R and want to make a Weibull-regression with the survival package. I know how to build my "Surv"-object and how to make a standard-weibull regression with "survreg". However, I want to fit a translated or 3-parametric weibull dist to account

[R] 3-parametric Weibull regression

2012-01-26 Thread Pfrengle Andreas (GS-SI/ENX7)
Hello, I'm quite new to R and want to make a Weibull-regression with the survival package. I know how to build my "Surv"-object and how to make a standard-weibull regression with "survreg". However, I want to fit a translated or 3-parametric weibull dist to account for a failure-free time. I th