Le 14.12.2005 11:54, Martin Maechler a écrit : >>>>>>"Romain" == Romain Francois <[EMAIL PROTECTED]> >>>>>> on Tue, 13 Dec 2005 15:40:59 +0100 writes: >>>>>> >>>>>> > > ........ > > Romain> A few comments : > Romain> - your code should be reproductible, otherwise it is useless. > (that > Romain> recommandation is on the posting guide) > > Romain> - that question is a top ten question on that list, go to the > archive > Romain> and you will find answers. (also posting guide) > Romain> BTW, it should be a FAQ and what about an example of overlaying in > hist > Romain> help page ? > >What about the following one --- do also note the comments though! > > Great !
>set.seed(14) >x <- rchisq(100, df = 4) > >## Comparing data with a model distribution should be done with qqplot()! >qqplot(x, qchisq(ppoints(x), df = 4)); abline(0,1, col = 2, lty = 2) > >## if you really insist on using hist() ... : >hist(x, prob = TRUE, ylim = c(0, 0.2)) >curve(dchisq(x, df = 4), col = 2, lty = 2, lwd = 2, add = TRUE) > > > I agree with you about qqplot, but a lot of people like that kind of hist-density overlay ... -- visit the R Graph Gallery : http://addictedtor.free.fr/graphiques mixmod 1.7 is released : http://www-math.univ-fcomte.fr/mixmod/index.php +---------------------------------------------------------------+ | Romain FRANCOIS - http://francoisromain.free.fr | | Doctorant INRIA Futurs / EDF | +---------------------------------------------------------------+ ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
