You could use the qqnorm function to obtain the correlation, as: > qqp=qqnorm(rstudent(regrname)) > cor(qqp$x,qqp$y)
If you do not want see the plot (as the qq.plot is richer): > qqp=qqnorm(rstudent(regrname), plot.it=F) domenico vistocco Tom Fitzhugh wrote: > Hi, > > I am trying to figure out how to get the correlation coefficient for a > QQ plot (residual plot). So to be more precise, I am creating the plot > like this: > > qq.plot(rstudent(regrname), main = rformula, col=1) > > But want to also access (or compute) the correlation coefficient for > that plot. > > Thanks, > > Tom > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org 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. > > ______________________________________________ R-help@r-project.org 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.
