[R] boxplot

Sorry, I have some troubles with the graph device. How can I draw the whiskers in a boxplot? Thank's so much. Daniela [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help P

[R] draw a function over a histogram

Sorry, I have some troubles with the graph device. How can I draw a function over a histogram? Thank's so much. [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE d

[R] maximization under constraits

I'm an Italian student looking for help. How can I maximize this function? neg_loglik<-function(param){ a<-param[1] b <-param[2] -(log(pr)-(a*s2)-(b*s)+n*log(2*a)-n*log(1-(b/sqrt(a))*exp((b^2)/(4*a))*(sqrt (pi))*(1-pnorm(b/(2*sqrt(a)), mean=0, sd=1))*1)) } Con > pr

[R] Maximization under constraits

I'm looking for a R function which can maximise this logliklihood function, under the constraits a>0 e b>0 f<-function(param){ a<-param[1] b <-param[2] log(prod)-(a*s2)-(b*s)-n*log(1-((0.5*b/sqrt(a))*(exp((b^2)/(4*a)))*((sqrt(pi ))*(1-pnorm(-b/(2*sqrt(a)), mean=0, sd=1)} I've tri