Hi. I have a vector of quantiles and a vector of probabilites that, when plotted, look very like the gamma cumulative distribution function. I can guess some shape and scale parameters that give a similar result, but I'd rather let the parameters be estimated. Is there a direct way to do this in R?
Thanks, Tim. week <- c(0,5,6,7,9,11,14,19,39) fraction <- c(0,0.23279,0.41093,0.58198,0.77935,0.88057,0.94231,0.98583,1) weeks <- 1:160/4 plot(weeks, pgamma(weeks,shape=6,scale=1.15),type="l") points(week,fraction,col="red") ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
