Re: [R] adding one line to a plot

Your line does show up, but the x values start at ~6 and the y values are incredibly small, so it is masked by the y=0 line. You probably have to check your calculations! --- Dimitri Liakhovitski schrieb am Mo, 24.5.2010: > Von: Dimitri Liakhovitski > Betreff: [R] adding one line to

Re: [R] adding one line to a plot

Thanks a lot, Peter, that's exactly what I was looking for: plot(density(tstat),xlim=c(-5,8),ylim=c(0,.4),lwd=2,col='red') z <- tstat[order(tstat)] lines(z,dt(z,df=18),col='blue') legend(4,.3,c("exact","t(18)"),lwd=c(2,1),col=c('red','blue')) Dimitri On Mon, May 24, 2010 at 1:26 PM, Peter Ehler

Re: [R] adding one line to a plot

On 2010-05-24 10:50, Dimitri Liakhovitski wrote: Hello! I am running a very simple mini Monte-Carlo below using the function tstatistic (right below this sentence): tstatistic = function(x,y){ m=length(x) n=length(y) sp=sqrt( ((m-1)*sd(x)^2 + (n-1)*sd(y)^2)/(m+n-2) )

[R] adding one line to a plot

Hello! I am running a very simple mini Monte-Carlo below using the function tstatistic (right below this sentence): tstatistic = function(x,y){ m=length(x) n=length(y) sp=sqrt( ((m-1)*sd(x)^2 + (n-1)*sd(y)^2)/(m+n-2) ) t=(mean(x)-mean(y))/(sp*sqrt(1/m+1/n))